IMS-4213 Wireless Power Sensor Also Works as Router IMS-4213 Wireless Power Sensor monitors power remotely via an integrated 2.4GHz wireless radio. The radio transmits power status data to an IMS-4200 Wireless Node Purchase Separately . 250 ft normal transmission range indoors. Maximum range increases with line of sight transmission. When used as a router, range is increased as each sensor/router adds another 250' of range to the system. IMS-4213 Wireless Power Sensor Specifications Operating Temperature Range 32 degrees to 95 degreesF Operating Humidity Range 0-90% RH Range Indoor/Urban Up to 250' 76m Transmit Power Output 100mW 20dBm Power Requirements 3 AA Batteries / 5VDC Power Supply Router Mode Wireless Technology ISM 2.4GHz, 100 mW 20dBm Housing White plastic Size/Dimension 6.8 in x 3.5 in x 1.5 in. Compatibility IMS-4200 Wireless Node Package Contents x1 Power Sensor IMS-4213 x1 5VDC Wall plug-in power adapter x2 Plastic drywall anchors x2 #6 Metal tapping screws x3 AA Alkaline Batteries The IMS series of wireless sensors also feature mesh networking technology. This allows each sensor to be used as an end device, either as a wireless sensor/router or as a low-power battery operated sensor. The device comes with 3 AA alkaline batteries which will power the sensor for up to 2 years. Also, available is an optional plug-in power supply. This refers to when the batteries act as backup power if main AC power is not available. This item ships from a separate warehouse and may require extra time for delivery.