The Gentex SSPK24 Colored Lens Series is a wall mount speaker/strobe that offers a quality speaker and visual alarm for warning and emergency notification. Applications include severe weather, evacuation, emergency response and many more. The SSPK24 Colored Lens speaker/strobe offers a 24VDC, fixed 15/75 candela strobe in lens colors of amber, blue, green and red. The SSPK24 colored lens speaker/strobe can be mounted in a 4" square x 2-1/8" deep back box, an extension ring is not needed. The Series provides a 25 or 70.7 VRMs speaker with field selectable power taps of 1/8W, 1/4W, 1/2W, 1W, 2W or 4W. The SSPK24 Colored Lens devices are listed to ANSI/UL 1480 and ANSI/UL 1638. The SSPK24 Colored Lens are also listed to CAN/ULC S526 and/or CAN/ULC S541 listed and are warranted for 3 years from the date of purchase.Standard Features 24 VDC nominal voltage with a fixed 15/75 candela Unit dimension: 6.1" (15.49 cm) square x 3.89" (9.88 cm) deep Lens colors available: amber, blue, green and red Speaker voltage 25 or 70.7 VRMs standard, field selectable Field selectable power taps: 1/8W, 1/4W, 1/2W, 1W, 2W, 4W High quality dBA output (intelligible) Frequency range 400-4000Hz Screw terminals, separate in/out wiring (12-18 gauge) Mount to a standard 4" square x 2-1/8" deep back box Synchronize with Gentex AVSM Control Module Tamperproof grill Faceplate available in red or off-white Wall mount