The Kidde P4010ACLEDSCOCA is an integrated 120V AC wire-in smoke and carbon monoxide alarm with 10-year sealed battery backup and LED strobe light that provides temporal patterns, visual and voice warnings. The model P4010ACLEDSCOCA is equipped with a 177 candela strobe light (powered by Cree® LEDs), designed to notify the deaf and hard of hearing. The unique design measures only 5.8cm (2.3”) in height, when mounted. The P4010ACLEDSCOCA will produce a steady flash warning (once per second) if smoke is detected, and sound 3 long beeps, followed by “Fire! Feu!,” repeating. If carbon monoxide is detected, the LED strobe will flash 4 times, go off for 5 seconds, repeating, in time with beeps, followed by “Warning! Carbon Monoxide! Monoxyde de carbone!”. In an alarm condition, strobe flashes will synchronize with other interconnected P4010ACLEDSCA and/or P4010ACLEDSCOCA alarms. The P4010ACLEDSCOCA is cUL Listed and has a 10-year limited warranty.