Description

Monnit wireless low temperature sensors use an RTD to accurately measure temperatures from -200°C to +162°C. Perfect for low temperature critical applications such as freezers and coolers. User customization allows you to set the frequency of sensor readings and create notifications from the system when certain criteria have been met or exceeded. The Low Temperature Sensor is not meant for wet, damp, high humidity environments. This sensor should only be operated in dry, low humidity environments. Should you need a temperature sensor that operates at extreme temperatures and can withstand getting wet or condensed on, please consider our Thermocouple Sensors. Available with NIST traceable certificate good or 13 months. (In the Customize section above select NIST Certified.) NIST certified sensors orders may take up to 6 weeks to prepare, certify and ship. * Actual range may vary depending on environment. ** Battery life is determined by sensor reporting frequency and other variables.

In the Box

• Wireless Sensor
• Mounting Hardware
• 3V Industrial Battery (Pre-Installed)
• SMA Antenna

Low Temp – RTD / Thermistor Specifications
Sensing Element	DIN 43760 Class B
Thermal Time Constant	15 sec max.
RTD Temperature Range	-200°C to +162°C (-328°F to +325°F)
RTD Accuracy at 0°C	+/- 3.3°C Standard (+/- 0.5°C Calibrated)
Weight	3.7 oz.
Variation Specifications
Security	Encrypt-RF® (256-bit key exchange and AES-128 CTR)
ALTA Industrial Specifications
Supply Voltage	2.0 – 3.8 VDC
Battery Type	Replaceable 3.6V, 1800mAH (single AA sized)
Battery Life	Up to 10 Year Battery Life.**
Max Operating Temperature	-40° to 85°C (-40° to 185°F)
Optimal Battery Operating Temperature	+10°C to +50°C (+50°F to +122°F)
Solar Power Option	3.0 VDC Solar Panel 600 mAH Rechargeable Battery (>2000 Charge Cycles – 80% of Initial Capacity) Charging Temperature Range: 0° to 45°C (32° to 113°F) Max Temperature Range: -20° to 60°C (-4° to 140°F)
Enclosure Material	IP65, NEMA 4X, CE rated, sealed, weatherproof enclosure
UL Rating	UL Listed to UL508-4x specifications (File E194432)
Dimension	3.7 in x 2.32 in x 1.38 in
ALTA 900 MHz Specifications
Operating Frequency	900 MHz Operating Frequency
Certifications	Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-G2SC1) Complies with Industry Canada standards. (IC: 9794A-G2SC1)
Device Range	Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*
Security	Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)

Suggested Application Uses for This Sensor

• Freezer and cooler temperature monitoring to detect failure and prevent food spoilage
• Environmental monitoring
• Smart machines and smart structures
• Cadaver storage cooler temperature monitoring
• HVAC system monitoring to detect failures or heating / cooling issues