... function of anti-fire and anti-leak gas. The system can used for villages, houses, shops, smal and medium stores, cars, ... 9-12VOperatting Currentless than 30mAGSM BandsGSM900/ DCS1800MHz (4 bands one can be customized)Wireless Frequecy315 MHz or 433MHzWireless Zones10Wired Zones7 zonesAlarm ... There is no middle man,no high markup,so we can provide quality items yet very competetive price!3.If you ...