The Wireless Smoke Detector is a photoelectric smoke detector for adding fire warning capability to intruder alarm systems. The smoke detector is designed for use in a single residential unit only. When sufficient smoke is detected, the detector will sound its alarm horn and the transmitter will send an alarm message. No radiation emission. Restore transmission. Test mode. Low battery transmission. Uses one of 16 million codes without dipswitches. Status transmission every 15/65 minutes. Cover and back tampers. Uses a 9 volt lithium or alkaline battery.