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

The Monnit Wireless Duct Temperature Sensor uses an NTC type thermistor with UL listed plenum cable to accurately measure temperatures in duct work, while maintaining a sealed environment. Can be easily installed and mounted for long term use. Monnit MNS2-9-W2-TS-DT-L08 Features1,200+ foot range12+ year battery life80+ wireless sensorsBank-level AES securityUp in 15 easy setupGlobal ready (900, 920, 868 & 433 MHz) Duct Temperature Sensor SpecificationsThermistor Operating Range: -40°C to +150°C ( -40°F to +302°F )Accuracy @ 25°C: +/- 1° C (±1.8°F @ 77°F)User Calibrated Accuracy: +/- 0.25° C (±0.45°F @ 77°F)Time Constant @ 25°C: 30 sec.Lead Wire Length: 8 ft ( 96 in.)Cable Rating: UL listed plenum cableWeight: 3.7 oz.Variation SpecificationsSecurity: Encrypt-RF® (256-bit key exchange and AES-128 CTR)ALTA AA SpecificationsBattery Type: 2 Replaceable AA 1.5 V BatteriesDimension: 4.375 in x 2.470 in x 1.12 inSupply Voltage: 2.0 - 3.8 V (2 x AA 1.5V Batteries or Optional Power Supply)B