Aten EA1240 Nrgence Temperature & Humidity Sensor, Compact design - built in 10' cable, High sensitivity, Easy operation, Connectors RJ-11 Male, Supply Voltage 5 VDC (Max), Plastic. The EA1240 Temperature and Humidity Sensor from Aten is designed to be used with the company's PN/PE series Power Distribution Units (PDU) to provide readings of temperature and humidity remotely.