All Products

RX4i Digital Intelligent Quad Outlet Relay, 120V 15A by Agrowtek

RX4i independently operates four receptacles for control of equipment such as: irrigation pumps, CO2 equipment, fans, lighting trigger cords, etc.

Connects instantly to Agrowtek's mini controllers via the GrowNET™ port for advanced automated control functions. Use stand-alone with the optional WiFi module or LX1 USB AgrowLINK for PC based control. LX2 ModLINK connects GrowNET™ devices to RS-422/485 for MODBUS RTU protocol communication.

LED indicators on the front panel provide status of each outlet. Rugged metal enclosure for wall mounting. Durable 20A relays and 15A receptacles. Conduit knock-outs and screw terminals for easy electrical installation.

Flexible and reliable outlet controller suitable for many applications.

Features

• Four independent relay outlets with status indicator lights
• 120V / 15A Capacity: Built-in DC power supply, no external adapter
• Internal terminal block connection: Available with power cord kit
• 1-Year Warranty
• WiFi optional for direct control
• GrowNET™ Digital Communication Port
• MODBUS RTU for industrial PLC control
• Durable powder-coated steel enclosure
• Made in USA

Standard Applications

• Carbon Dioxide Tanks, Generators
• Water Irrigation Pumps
• AgrowDose AD1 Single Dosing Pump
• Lights & Lighting "Trigger" Cords
• Exhaust & Circulation Fans
• Industrial Automation & Hobby Projects

98768-56 Traceable Memory-Loc™ Datalogging Low-Temp Thermometer with Calibration; 2 Stainless Steel Probes by Digi-Sense

Easily monitor temperatures overnight or for any time period - stores over 1 million temperature observations. Datalogger will stop recording when storage is full and will not overwrite recorded data. Memory can be cleared after downloading data and alarm events. Set high and low alarms in 1° increments; alarm sounds when temperature rises above or falls below set points. The alarm tracking feature stores data for up to 10 different alarm events detailing when the alarm state occurred, as well as when the unit returned within range. Alarm state indicator include audio alerts and flashing LCD segments. Transfer data recorded in a CSV format to any computer via a USB flash drive - no software is required. Unit continues to record data while downloading data. Sampling rate is 5 sec (10 sec for models 98768-55, -56, -59, and -60). Select logging interval ranging from 1 min to 24 hours. Other status indicators include low-battery, memory full, USB data transfer, and active alarm state. Probe is attached to a 10-ft (3 m) microcable that permits a door to close on it. Mount meter with included hook-and-loop strips, wall-mount slots, or use flip-open stand on benchtop.

Select from glycol-filled glass, or vaccine bottle probe(s), standard plastic Bullet™ probe(s), or stainless steel probe(s). Bottle probes contain nontoxic glycol solution which is considered GRAS (generally recognized as safe) by the FDA. The solution filled bottle simulates the temperature of other stored liquids and eliminates the rapid temperature fluctuation caused by opening the refrigerator/freezer door. Vaccine bottles are designed to fit vaccine trays. Use standard Bullet probe to measure air and liquid temperatures. Bullet probe sensor and cable may be completely immersed; sensor measures 3/4"L x 0.187" dia (19 x 4.75 mm). Durable stainless steel probes measure 6-1/4"L x 0.125" dia (159 x 3.18 mm) and withstand both low and high temperatures - ideal for measuring temperatures of air, liquids, and semi-solids.

Traceable® Products have an individually-numbered Traceable® Certificate provided with each unit, that assures accuracy from our ISO/IEC 17025:2017(1750.01) calibration laboratory accredited by A2LA. It indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMI) that are signatories to the CIPM Mutual Recognition Agreement. Each product goes through an intense vetting process before it can carry the Traceable name, thus saving you both time and money by not having to calibrate separately.

Key Features

• Store up to 10 unique alarm events, memory can be cleared after downloading data
• Smart-Alarm™ with visual/audible alarm continues to alert even if the unit returns to nonalarm conditions
• Triple-display - shows high, low, and current temperature simultaneously
• Includes NIST-Traceable certificate from our A2LA accredited (1750.01) calibration laboratory
• Ideal for monitoring ultra-low temperature freezers

Includes

NIST-Traceable calibration certificate with data, Pt RTD stainless steel probes with 10-ft PTFE cable, flip-open stand, hook-and-loop strips, magnetic strips, wall mount, and batteries

Part Number: 17L-389N

*Please note we can only ship RKI products to customers within the United States

Part Number: GAMAXMMC

H-10-116-10 Phosphine Colorimetric Gas Detection Tube, 5 - 50 ppmv (10 Tubes / Box) by RAE Systems

RAE Systems colorimetric gas detection tubes enable quick, on-the-spot measurement of a wide range of toxic and combustible gases and vapors. RAE Systems tubes are easy to read, and provide a sharp, clear color change directly corresponding to the concentration of gas present. RAE Systems tubes are compatible with the RAE Systems piston hand pump, a reliable way to draw samples of an exact volume required for the most accurate measurements.

Key Features

• Wide assortment of tubes available to detect over 300 gases and vapors
• Easyto use, even in multiple layers of gloves
• Easy-to-read with sharp,clearcolorchange
• No calibration or other maintenance required

Applications

• Oil and gas
• Chemicals and petrochemicals
• Agriculture and pestcontro
• Food and beverage production
• Environmental protection
• Fire service
• HazMat response
• Nationalsecurity

VN00124 X-am 5000 Multi-Gas Detector, LEL, O2, CO-LC, H2S-LC, Rechargeable Kit by Draeger

The Draeger X-am® 5000 belongs to a generation of gas detectors, developed especially for personal monitoring applications. This 1- to 5-gas detector reliably measures combustible gases and vapors as well as O₂ and harmful concentrations of toxic gases, organic vapors, odorant and amine.

Ergonomic mobile phone design

Despite its advanced functionality, the Draeger X-am® 5000's practical mobile phone design and light-weight make it comfortable to carry. Reduced to its essentials, the two-button control panel and easy-to-follow menu allow for intuitive use.

Flexible sensor exchange

It is easy to exchange, upgrade, or calibrate the sensors to other gases. The ability to customize the Draeger X-am® 5000's sensors makes more applications possible including the possibility to deploy in a rental fleet.

Poison-resistant Ex sensor

For improved safety when facing unknown and potentially explosive hazards—the Draeger X-am® 5000 provides dependable warnings in the event of explosive atmospheres due to the high level of sensitivity of the innovative catalytic ex sensor. It not only responds quickly to explosive gases and combustible organic vapors, it is also highly resistant against sensor poisons such as silicone and hydrogen sulfide. In combination with its long-term stability, this offers an extraordinarily long sensor lifetime of over four years. This will reduce operational costs.

Durable sensor technology

Equipped with durable XXS sensor technology, the Draeger X-am® 5000 offers maximum security at extremely low operational costs. The sensor's resistance, in combination with its long-term stability, provides the sensor with a lifetime in excess of four years, which can help reduce operational costs.

Robust and watertight

The Draeger X-am® 5000 is water and dust resistant, according to IP67 standards. The detector remains fully functional and ready for use, even after being dropped into water. The integrated rubber protection and shockproof sensors provide additional resistance to impact and vibration. Moreover, the Draeger X-am® 5000 is resistant to electromagnetic interference.

External pump

The optional external pump, which operates with a hose length of up to 45 meters (147 feet) long for the Mark II pump, makes it possible to use the detector for pre-entry measurements into confined spaces such as tanks, shafts, etc. The pump starts automatically when attached to the gas detector.

Area monitoring

In combination with the Draeger X-zone® 5500, the gas detector can be used for various area monitoring applications. Up to 25 Draeger X-zone® 5500 units can be automatically interconnected to form a wireless fence line. This interconnection of the area monitoring devices allow for the fast securing of larger areas, e.g. pipelines or industrial tanks—even within the scope of industrial shutdowns.

Optimum solutions for function or bump tests and calibrations

Simple, fast, and professional: from a function or bump test to complete documentation, users can choose from a range of practical, on-site solutions that offer maximum safety for every application. The automatic test and calibration station Draeger X-dock® and the Draeger Bump Test Station are ideal system extensions that save time and reduce workload. Fresh air, mixed gas and single gas calibrations can be done directly using the Draeger X-am® 5000 menu.

Flexible power supply

The Draeger X-am® 5000 can be used with the standard alkaline batteries. In addition, it can be fitted with a T4 battery that can be charged while still inside the instrument. The optional Save Energy Mode makes it possible to increase the operating time of the Draeger X-am® 5000 to more than 40 hours. This is done by selecting a measurement interval of either one second (the standard), 10 or 20 seconds for the CatEx sensor.

GS-AA-A-070-G Gasman Single Gas Monitor, 0-100% LEL Methane, Rechargable Battery, German Safe Area only by Crowcon

For over 40 years, Crowcon Detection Instruments has produced state of the art gas detection devices for personal and industrial use. Building upon their reputation for reliable and innovative gas monitoring products, Crowcon introduces the Gasman personal gas monitor. Its lightweight and compact design is convenient for jobsites where workers need not be weighed down by excessive bulk and equipment. The unit conveniently clips to a pocket or helmet and operates continuously.

The Gasman personal gas monitor has numerous convenient features such as:

• One button technology
• Backlit LCD display
• Durable polycarbonate casing
• Quick response triple alert system
• Compact and lightweight design

Easy to Use

The Gasman s true one button technology is an ideal and simple design. The large glove friendly button is mounted on the front of the unit for easy access and controls all of the unit s programmable features. Also on the front, the Gasman s easy to read backlit LCD screen indicates gas readings and the battery status. The simple screen provides a clear indication of the unit s operation status. It will also alert the user 30 days in advance of when a calibration test is due. With a simple and intuitive design, Crowcon has produced a gas detector that reduces the complexities of workplace safety, and ensures workers in a straightforward manner that their equipment is on and operational.

Triple Alarm System

This portable single gas detection system features a triple alarm system that is sure to alert the user and anyone in the vicinity. The visible alarm utilizes a dual red and blue flashing LED light, and the unit houses an internal vibrating alert system. These two indicators allow for visual recognition in loud environments and working conditions. The alarm system also features a programmable audible alarm at 95 decibels. The unit is capable of a variety of alarm tones, and users can select which tone may be best for the individual workplace setting. The triple alarm system with multiple sensory indicators is sure to be noticed in almost any work environment.

Specifications

The Gasman single gas monitor is lightweight and compact, weighing less than 135 grams and with dimensions of 90 x 48 x 24 mm. The unit is available with a wide variety of gas sensors which feature various detection and alarm levels. The unit also features a quick response time of 20 seconds for flammable and toxic gases or 10 seconds for oxygen. Its datalogging feature has approximately 900 hours of storage and all events are time stamped. The battery life for this unit is incredible with 12 hours of runtime on a Rechargeable battery battery or up to 2 years on a non-Rechargeable battery.

723-008 Eagle 2 Portable Monitor for LEL & PPM/O2/Cl2 by RKI Instruments

Continuing in its legacy of durable and reliable gas detection and monitoring systems, RKI Instruments is proud to offer a new product in its popular Eagle portable gas detector series. The Eagle 2 can monitor up to 6 different gases and is equipped with several exclusive features that can only be found with the Eagle series. In addition, its large glove friendly push buttons and LCD screen ensure an ease of use when onsite. Rated intrinsically safe, the Eagle 2 is equipped with state of the art technologies that are not available with other competitive gas detectors and monitors.

Specialty Sensors

The Eagle 2 has a variety of available specialty sensors. Workers can use a photoionization detector for low or high range VOC detection and Fence Electrode Technology for humidity and contamination resistance. An infrared sensor is available for Co2, % LEL CH4, % Volume CH4, % LEL HC, and % Volume HC. Thermal conductivity sensors are available for % Volume H2 and % Volume CH4. The unit is also compatible with the smart plug and play toxic sensors for the detection of NH3, AsH3, CI2, HCN, PH3, and SO2. With the wide variety of sensors and gas detection available, the Eagle 2 can be customized to meet almost all worksite gas detection needs.

Exclusive Features

The monitor has a long internal pump that can draw samples for up to 125 feet. The pump features a low flow auto shut off and alarm. This allows operators to respond swiftly from a safe distance. The unit is multilingual with 5 different language preferences, and features an alkaline battery life of 18 hours or a NiMH life of 20 hours. To protect the integrity of the device and the configurations, the unit can be password protected. The Eagle 2 also has standard data logging capabilities for easy research, evaluation, and site monitoring. To reduce calibration costs and time, the unit features an automatic calibration option and a single gas calibration option.

The Eagle 2 is heavily protected from environmental conditions by a weather proof, chemical resistant RFI/EMI coated high impact polycarbonate/PBT blend enclosure. The enclosure also renders the unit water and dust resistant. Because of the enclosure, the Eagle 2 can function in 2 inches of water without leakage.

Eagle 2 Specifications

The portable and durable unit is lightweight at less than 4 pounds. Its dimensions are suitable for convenient carrying (9.5?L x 5.25?W x 5.875?H), and it features a conveniently placed durable top handle. The large easy to read display has a polyurethane overlay backlights on demand and when the alarm is activated. The 2 alarm channels are fully adjustable for the user and can be password protected. With a 95 dB buzzer and 4 high intensity LEDs, the alarm is sure not to be missed. The Eagle 2 is standard with a 2 year warranty for material and workmanship and a 1 year warranty for PID sensor.

*Please note we can only ship RKI products to customers within the United States

*Please note we can only ship RKI products to customers within the United States

*Please note we can only ship RKI products to customers within the United States

BW Technologies Black Leather PVC Carrying Case

As part of its accessories offerings, BW Technologies manufactures a range of carrying cases and holsters. The BW Technologies Black Leather PVC Carrying Case is a durable and rugged protective case that is unobtrusive and does not interfere with the unit's operation. The black leather is ideal for gripping, and the front of the unit can easily be seen through the clear plastic cover. The cover allows for easy access to all of the device's buttons and allows for the LED lights on the unit to continue to be seen from every angle.

Part Number: MC2LC1

*Please note we can only ship RKI products to customers within the United States

ORP60 Premium ORP Pocket Tester by Apera

The Apera Instruments ORP60 tester is simply the best pocket ORP tester you can get in the market for all kinds of regular ORP testing. The platinum ORP probe is replaceable and easy to install, so you don t have to buy a whole new meter once the probe retires.

Auto Calibration with buffer recognition and 0 to 50°C Auto Temperature Compensation (ATC), 1 mV/±0.2% F.S, 0.5°C accuracy with -1000 to 1000 mV measuring range, auto recognition and indication of stable values (optional auto hold function available) improves consistency, saving you the trouble of guessing when to manually hold measurement (with optional auto hold function). A Large clear 180° viewing angle screen with 3 backlit color (blue for measuring mode, green for calibration mode, red for warnings), it supports dual display of temp./pH value and stable readings (with a smiley face).

Comes with a complete kit of premixed standard solution (222 mV), soaking solutions (KCL), AAA batteries, and a lanyard all in a portable carrying case. Easy menu setting, customizing your tester according to your needs. IP67 water-proof and dust-proof, floats on water so you don't have to worry if dropped in water by accident. Longest 2000 hours' continuous operation (without backlit) powered by 4 AAA batteries (with low power warning and auto power off in 8 min if no operation).

Warranty: 2 years for the ORP meter, 6 months for the ORP probe.

• Easy-to-install Replaceable FLAT sensor, Triple-Junction structure prevents clogging, designed for Skin, Fabrics, Paper, and other flat surface pH testing, also works great for micro-volume and regular liquid pH measurement
• Easy Auto Calibration with auto buffer recognition (1 to 3 points); Auto Temperature Compensation (ATC)
• Replaceable ORP Platinum Probe, easy to install so that you don t have to buy a whole new meter once the probe retires
• Auto recognition of stable values (optional auto hold function available) improves consistency so you don't have to guess when to manually hold measurement
• LARGE CLEAR LCD with 3 backlit color (indicating 3 different modes), dual display of temp./ORP, and indications of completed calibrations and stable readings
• COMPLETE KIT with ready-to-use calibration solutions, a calibration bottle, storage solutions, AAA batteries, and a lanyard all in a premium portable carrying case

T4-HOCA-H2-STANDARD T4 Personal Gas Monitor, 4 Gas - H2S, O2, CO (H2 resistant), CH4 % LEL, Alternate Alarm Levels / Certifications by Crowcon

T4 integrates innovative safety features and an intuitive, rugged design to provide advanced protection for those working in harsh environments. This portable multigas detector, which is exceptionally easy to use and service, protects against the four most prevalent gas hazards: carbon monoxide (CO), hydrogen sulphide (H₂S), flammable gases and oxygen (O₂) depletion.

Features

• TWA resume function - unique to T4, this innovative feature ensures toxic gas exposure is calculated accurately over an entire shift, even if T4 is switched off for a break or during travel to another site.
• 18 hour battery life - safely work multiple or longer shifts between charges, covered by the 18 hour battery life.
• Backlit display - large, clear display with backlight and option to flip the screen 180° for easy viewing while worn.
• Rugged design - with a thick anti-shock rubber casing and drop-tested to 13.1 feet on concrete, T4 provides dependable operation under the most demanding use.
• Water & dust-resistant to IP65 & IP67 - provides protection in the harshest environments.
• Dedicated sensors - one sensor for every gas ensures effective, fast and reliable detection.
• Positive safety indicator - a simple 'traffic light' status indicator which, at a glance, provides visual assurance of operational and compliance status to both users and supervisors. Green light - Working safely. Red light - Attention required
• Intrinsically safe - ATEX approved and UL Class 1 Div 1 for safe operation in a wide range of hazardous environments.
• Multiple alarms - audible 95dB alarm, bright red/blue LED's and vibrating alerts provide effective warning to gas hazards.
• Easy operation - large single button and intuitive menu system minimize training and allow easy operation while wearing gloves.

SD-1DGH-ACE SD-1GH Detector Head, 4-20 mA transmitter, with sample adapter, 0-100ppm acetonitrile, C2H3N, SG-8521, AL50ppm by RKI Instruments

RKI Instrument's model SD-1 Series smart combustible gas, toxic gas, oxygen, and organic vapor detector/transmitter is a robust and reliable explosion proof design for detecting LEL and ppm levels of hazardous atmospheres. In addition to measuring the common %LEL levels of methane, hexane and isobutane, for example, the SD-1 Series also has the capability of measuring a wide variety of toxic organic compounds in a PPM range such as acrylonitrile, ethylene oxide, n-methyl pyrolidone, methylene chloride and many others. This gives the SD-1 Series a unique niche in RKI's gas detector line-up. The SD-1 has an ATEX/IECEX approval for the explosion class ExdIICT5 and has an IP-65/67 ingress protection rating.

The SD-1 has a 4-20mA signal output as well as relay contacts for interfacing with other control systems or monitoring facilities. All SD-1 types are also available with HART communication instead of 4-20mA relay. SIL2 is available for the IR, EC and OX types. In facilitating non-intrusive conditions in hazardous atmospheres, the SD-1 can be calibrated and it's menus navigated with magnetic switches and a magnetic key.

Features

• Wide range of detectable gases: % LEL Combustibles, catalytic; % LEL Combustibles, IR; H2S, CO, & O₂; PPM for acrylonitrile, hydrogen, ethylene oxide, n-methyl pyrolidone, methylene chloride, and many others
• Sensor types include: Catalytic, Galvanic Cell, MOS, IR, & Electrochemical
• Direct digital display of gas readings
• HART Communication protocol or 4-20 linear output
• Available with SIL2 approval (IR, EC, OX versions)
• Easy maintenance using a magnetic key
• Self-diagnosis by microprocessor
• Low power operation (Maximum: 3W)
• Explosion proof: ATEX, IECEx, ExdIICT5

Applications

• LNG Terminal
• Petrochemical/Chemical plants
• Power plant
• Utilities
• Iron and steel works

*Please note we can only ship RKI products to customers within the United States

MCB3-A3C1REZ-02M MultiRAE Pro Pumped Portable Multi-gas Monitors - 10.6 eV ppb PID / LEL / CO + H2S / O2 / Gamma / Li-ion / Non-Wireless / Accessories Kit / Confined Space and Calibration Kit (4-gas + 10 ppm Iso) by RAE Systems

The MultiRAE Pro is the industry's only portable wireless multithreat monitor. The MultiRAE Pro's ability to simultaneously detect gamma radiation and toxic industrial chemicals (TICs/TIMs) enables responders to reduce the equipment footprint and achieve greater agility when operating downrange.

The MultiRAE Pro's optional wireless capability improves safety by providing commanders and safety officers real-time access to instrument readings and alarm status from any location for better situational awareness and faster incident response.

Key Features

• All-in-one monitoring capabilities for radiation, VOCs, oxygen, toxic and combustible gases, up to 6 threat types at a time
• Over 25 interchangeable sensor options, including parts-per-billion PID and gamma radiation
• Wireless access to real-time instrument readings and alarm status from any location
• Unmistakable five-way local and remote wireless notification of alarm conditions
• Intelligent sensors store calibration data, so they can be swapped in the field
• Large graphical display with easy-to-use, icon-driven user interface

Applications

• Civil defense (search and rescue)
• Homeland security
• HazMat response
• Military
• Semiconductor manufacturing
• Environmental

Sperian Biosystems PhD6 Multigas Detector

The Biosystems PhD6 Multigas Detector is the latest development in compact multigas detection systems. The detector is proven to be compact, efficient, and cost effective. With dual alarm systems featuring ultra-loud audible indicators and ultra-bright LED visual indicators, users and those nearby are always notified when potential hazards may be present. When developing this detector, the engineers at SperianProtection Instrumentation also developed an express docking station that would reduce calibration time and labor costs. The detection and docking station help users meet record keeping requirements and reduce the risks of human error. With the SperianBiosystems PhD6 Multigas Detector, users can rest assured that they are receiving the very best in gas detection technology.

Key Features

The Biosystems PhD6 Multigas Detector is compatible with over 19 sensor choices including:

• PID
• IR-CO2
• IR-CH4
• Conventional LEL
• Oxygen
• 15 different toxic gas sensors

The gas detector is encased in a durable solid polycarbonate case with a rubber over mold for easy handling. It has an interchangeable battery pack with both Alkaline and Li-Ion rechargeable batteries. Both battery types offer up to 24 hour run times. The unit features dual audible alarms at 92 decibels and front and side ultra-bright LED visual alarms to ensure that the user and those nearby are always notified of possible hazardous conditions. For easy interpretation, the detector has an easy to read status bar and large LCD display that notifies users of the device s functionality and calibration due date. Using the menu options, users can easily adjust a variety of the instrument s settings.

Automatic Docking Station

When developing the PhD6 Multigas Detector, product developers also created an automatic docking station (Biosystems IQ6 Express Dock) to be fully compatible with the detector. The docking station aims to reduce labor time and costs by fully automating certain aspects of instrument maintenance including calibration, functionality testing, and record keeping. Using the Express Dock, users can maintain compliance with recordkeeping requirements by simply docking the detector in the station. The station will automatically perform a variety of operations without user intervention.

Sperian Protection Instrumentation and Honeywell

Sperian Protection Instrumentation is a global leader in personal safety equipment. The company was recently acquired by Honeywell, another global leader in technology and innovation. As a Fortune 100 company, Honeywell has a vested interest in maintaining its reputation as a developer of efficient and reliable safety equipment. Sperian Protection Instrumentation helps to expand Honeywell s personal safety offerings while advancing their position in the American market. By purchasing a product by Sperian and Honeywell, customers can be assured they are receiving the very best in safety technology and equipment.

Part Number: 58L-414

CCR20X1X7X8AF3 Corrosion Coupon Rack, Strainer, Inlet/Outlet Valves, Flow Control Valve, 2 Station PVC, 73°F @ 150 PSI, 3 GPM by Quantrol

Our Corrosion Coupon Racks are hydrostatically tested for maximum system performance exceeding industry standards.

Pulsafeeder's standard corrosion rack systems are designed to provide reliable, convenient side stream monitoring using ASTM standard coupons. These rugged systems are available for cool or hot water systems and can be configured for up to six monitoring stations.

Available options include quick release coupon holders, flow meters, y-strainers and more.

Features

• Schedule 80 PVC piping assembly and components for standard applications
• Schedule 40 black iron piping assembly and components for hot water applications
• All black iron racks are supplied on unistrut for easy installation
• Designed to ASTM specifications
• Wall mountable for easy installation
• Accepts ASTM test coupons
• Plastic pipe systems are mounted on 1/4" Poly panel

Applications

• Cooling Tower Systems
• Once-Thru Cooling
• Closed Loop Cooling
• Boiler Water Systems

WD-37250-20 Long-Cycle Hygrothermograph by Oakton

Record up to 3 months of humidity and temperature readings on one chart!

Unit features a corrosion-resistant acrylic plastic case with tinted cover for easy viewing. Operates on one C battery for up to six months continuous use. Built-in battery test indicates battery condition with a button press. Unit includes red and blue pens, battery, and one roll of 1-month chart paper.

• Includes red felt-tipped pen, blue felt-tipped pen, roll of 1-month paper, C battery (1)
• Quartz controlled drive gives consistant drum rotation speed even as batteries weaken
• Record temperature and humidity on 1 or 3 month rotation
• Quartz-controlled strip chart drive consistently rotates chart drum even when batteries are weak