The wireless photoelectric smoke alarm makes use of radio frequency technology to interconnect with other alarms in the household. This means if one alarm is activated, all the alarms will start to sound. Battery-sealed alarm does not require wiring making installation easier in just 2 minutes. When the alarm starts to siren, it sends a 360 degree signal to all the other alarms. Operating range of the alarms is dependent on the size of the building. Alarm can be installed on a mounting base or can be recessed. It gives an alarming sound of 85 dBA at a range of 3 meters. Additional features include a 10-minute hush button and a 30-day low battery warning. Smart-clip ceiling mechanism prevents any damage or scratches on the ceiling while installing.