Cole Hersee 4112-RC000 Buzzer with Pilot Light Rugged combination warning light and buzzer give audible and visible alert Universal application, use with any electrical switch Red lens, long-life led 11/16-Inch (17.46mm) diameter mounting stem, 17/32-Inch (13.88mm) long Body size, 1 7/8-Inch Long x 1-Inch Wide x 1 11/32-Inch High (47.6 x 25.4 x 34.1mm)