FGD-WSG30-Spot Wireless Water De tection Sensor for Sensaphone WSG30 System Use the FGD-WSG30-SPOT Wireless Spot Water Detection Sensor with your Sensaphone WSG30 purchase separately . This sensor includes a built-in radio transmitter and water sensing probes for monitoring for the presence of water at a particular location. The sensor comes with three AA alkaline batteries which will power the sensor for up to two years. Made by Sensaphone. Name WSG Wireless Spot Water Sensor Product # FGD-WSG30-SPOT Operating Temperature Range 32 degrees to 122 degreesF 0 degrees to 50 degreesC Operating Humidity Range 0-95% Transmit Power Output 100mW 20dBm Range Up to 300' 90m Power Requirements 3 AA Batteries Wireless Technology ISM 2.4GHz, 100 mW 20dBm Housing White plastic Size 6.8? x 3.5? x 1.5? 17.2cm x 8.9cm x 3.8cm Compatibility WSG30 Package Contents x1 WSG Wireless Spot Water Detection Sensor x3 AA Alkaline batteries This item ships from a separate warehouse and may require extra time for delivery.