Wireless Smoke Detector Wf-Lx222RF
1. DIY unit, easy & simple installation
2. Built-in signal transmitter & receiver
3. Totally wireless communication
4. Can interconnect with up to a total of 20 units, all interconnected alarms will sound simultaneously if any one alarm is activated.
5. Dip switches: 2 sets dip switches for coding the transmit and receive frequency to prevent interference with oher RF base.
6. With 9V G6F22H battery & 4*AA battery.
7. Product size: 12.7*12.7*6.4cm