KIDDE indoor polycarbonate siren with beacon for ceiling mounting. red, red strobe lamp. sound (pulse alert) 85 to 97 db, 32 tones. automatic synchronisation, volume control, adjustable flash. anti-tamper locking mechanism, low-profile base with wiring to the base (timesaver). siren, beacon and control separate, power supply 17 to 60 vdc. sound consumption 5.1 ma / light 20 ma at 0.5 hz 40 ma at 1 hz