Nominal voltage 12VDC and 24VDC 24VDC units have field selectable candela options of 15, 30, 60, 75, and 110 candela 12VDC units have field selectable candela options of 15, 30, 60, and 75 candela HEH horn is available in 12VDC or 24VDC Super-Slide® Bracket - Ease of Supervision Testing Checkmate® - Instant Voltage Verification Unit Dimensions: 5" high x 4.5" wide x 2.5" deep Synchronize strobe and/or horn with Hochiki Series Control Module (12VDC product must use the AVSM Module) Prewire entire system, then install signals Lower installation and operating costs Input terminals 12 to 18 AWG Switch selection for high or low dBA Switch for chime, whoop, mechanical and 2400Hz tone Tamperproof re-entrant grill Switch for continuous or temporal 3 (not available on whoop tone) Surface mount with the HSB (Hochiki ceiling surface mount box) Silence horn while strobes remain flashing Wide voltage range 8-17.5VDC (12VDC units) 16- 33VDC or FWR (24VDC units) Faceplate available in red or off-white