Alarm Controls MCK-3 Series – Mortise Cylinder Single Gang Station 1.75″ Wide With Red and Green LEDs**Mortise Cylinders not included** Features Standard Features Stainless steel wall plate accepts standard 1-1/8 mortise cylinder Tamper-proof and slotted-head screws included Mortise Cylinders not included, available separately (CY-1, CY-1A)Options Momentary or alternate switch, see model chart SPDT or DPDT, see model chart No LED, green LED, green and red LEDs, see model chart. Pneumatic time delay: 2 to 45 seconds, see model chart. Add WP for weather resistant cover and surface mount box. Available for single gang models only.SpecificationsElectrical Contacts rated 4A at 28 VDC LEDs operate on 12 or 24 VDC/VAC Switch depth behind plate: 1-1/4 Switches terminatedin colored leadsOperating Temperature +15 to 120F