Temperature Meter includes a prewired temperature sensor with a 6' cable. Monitors temperature on a bright LED screen. Reverse polarity protected. Same compact round size as a standard 12 VDC receptacle, this Temperature Meter supports many installation options. Constructed of injection molded nylon. Installation is as easy as drilling a 1-1/8" hole, inserting the socket body, tightening the locking nut, and connecting the wires. 12-24 VDC. IP67 waterproof rating.