Round Red LED Temperature Meter The temperature meter includes a prewired temperature sensor with a 6-foot cable and it monitors temperature on a bright LED screen. – Features: Reverse polarity protected The same compact round size as a standard 12VDC receptacle, this temperature meter supports many installation options Constructed of injection-molded nylon Installation is as easy as drilling a 1-1/8-in. hole, inserting the socket body, tightening the locking nut, and connecting the wires IP67 waterproof rating 12-24VDC Specifications: Diameter: 1-7/16 in. Length: 1-1/16 in. Height: 1-1/8 in. Volts: 12-24 Temperature Range Fahrenheit: -67 degrees to 248 degrees – Weight: .02 lb.