Sea-Dog Round Red LED Temperature Meter One Size. Features:Reverse polarity protectedThe same compact round size as a standard 12VDC receptacle this temperature meter supports many installation optionsConstructed of injection-molded nylonInstallation is as easy as drilling a 1-1/8-in. hole inserting the socket body tightening the locking nut and connecting the wiresIP67 waterproof rating12-24VDCSpecifications:Diameter: 1-7/16 in.Length: 1-1/16 in.Height: 1-1/8 in.Volts: 12-24Temperature Range (Fahrenheit): -67 degrees to 248 degreesWeight: .02 lb. Specifications for Sea-Dog Round Red LED Temperature Meter: Manufacturer: Sea-Dog Color: Black Package Contents: Sea-Dog Round Red LED Temperature Meter Sea-Dog 421618-1: Round Red LED Temperature Meter One Size