JR-666 Wirelss Probe 1.With disposable batteries 2.match with FD666 alarm system only JR-666 Wirelss Probe With disposable batteries,match with FD666 alarm system only .Alice Wang . Chaoan Country Li ... :alice-wang225 MSN:alice-wang225 Address:NO.5B183/5B213,pacific Security market,North Huaqiang,Futian District ,ShenZhen city,China