FGD-WSG30-TEX Wireless Temperature Sensor for Sensaphone WSG30 The WSG30 Wireless Temperature sensor with External Probe is designed to work exclusively with the Sensaphone WSG30 not included . Built-in radio transmitter and a remote temperature probe temperature measurements for a refrigerator, freezer or other harsh environment. Two AA batteries included power for up to two years. Add optional plug-in power supply for whichbatteries backup if main AC power fails. FGD-WSG30-TEX Wireless Temperature Sensor Specifications Temperature Range 20 degrees to 115 degreesF 85 degrees to 57 degreesC Sensor type 2.8K Thermistor Accuracy /- 1.0 degreesF /- 0.56 degreesC Range Up to 300 90m Power Requirements 2 AA Batteries / 5VDC Power Supply Router Mode Wireless Technology ISM 2.4GHz, 100 mW 20dBm Housing White plastic Size 3.1 x 3.8 x 1.1 7.9cm x 9.8cm x 2.85cm Compatibility WSG30 *Specifications subject to change without notice WSG Wireless Temperature Sensor w/external probe FGD-WSG30-TEXPackage Contents 1 WSG Wireless Temperature Sensor 2 AA Alkaline batteries 1 Mounting kit 1 FGD-0101 Weatherproof Temperature Sensor w/12 wire Required Not supplied 5V Power Supply XFR-0041 This item ships from a separate warehouse and may require extra time for delivery.