ALTA Wireless Low Temperature Sensor - AA Battery Powered, 900MHZ

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. Monnit MNS2-9-W2-TS-LT-L03 Features 1,200+ foot range 12+ year battery life 80+ wireless sensors Bank-level AES security Up in 15 easy setup Global ready (900, 920, 868 & 433 MHz) 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 AA Specifications Battery Type: 2 Replaceable AA 1.5 V Batteries Dimension: 4.375 in x 2.470 in x 1.12 in Supply Voltage: 2.0 - 3.8 V (2 x AA 1.5V Batteries or Optional Power Supply) Battery Life: At 1 hour heartbeat setting, AA batteries will last up to 10 years.** Max Operating Temperature Using AA Alkaline: -18°C to 55°C (0°F to 130°F) Max Operating Temperature Using AA Lithium: -40°C to 60°C (-40°F to 140°F) Optimal Battery Operating Temperature: +10°C to +50°C (+50°F to +122°F) Enclosure Material: ABS 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)