... , libraries, banks, offices, factory, company, etc. Features: >Could use with PIR DVR >5 tel. number set for emergency call >10 ... VoltageDC 9-12VOperatting Currentless than 30mAGSM BandsGSM900/ DCS1800MHz (4 bands one can be customized)Wireless Frequecy315 MHz or 433MHzWireless ... 1 siren, 2 remote controllers, 1 power supply, 1 GSM antenna, 1 manual Detailed pictures:Warranty:1.All products have ...