For 12 and 24 volt systems; Simple, quick, Plug & Play installation; Instant response; Built-in retractor; Low profile design; Self-contained key pad with waterproof Plug & Play Deutsch connectors; Wiring harness length 30″ (76.2 cm) from the back of the switch bezel; 36″ power pigtail for control box; 2-1/16″ hole cut-out size, overall key pad size of 2.75″ x 2.75″; 4.08″ clearance required from the back of the key pad’s mounting location; 2 high-intensity LED Indicator displays show the exact position of trim tabs at all times; Photo Eye for optimum viewing in all light conditions; Backlit key pad for optimum viewing at night; Self-Check feature only available on the 15170001