The Ademco Honeywell WAVE 2 is an indoor sounder that can be mounted on a ceiling, or in a corner, or horizontally, or even vertically. The WAVE2 has a snap-open hinge case which provides easier installation and is the same size as a standard gang box. The Ademco WAVE-2 may be used on Ademco hardwired / hybrid alarm systems as well as many other brands. Not for use on Ademco Lynx models! Current draw @ 12vdc is approximately 500ma. Output is 106 db at one meter. This operates within the 6V – 14 VDC power range