INTERRUPTOR LLAVE DEL SISTEMA DE ALARMA (LLAVE REDONDA) MANTENIDO, 2 LLAVES, SPST 4AMP@125, ENCENDIDO Y APAGADO
Mounting is by the included retaining nut. This key switch mounts in the industry-standard single-D or double-D 3/4" hole. The housing is triple-plated. NAMA Standard 3/4” mounting hole with two “flat sides” (AKA “double-D”).