... Alarm System + Auto DialingThis alarm system supports most of the wireless detectors, such as PIR sensor, magnetic gap detector, infrared balusters ... and 3 groups for SMS message* Support 4 wired zones, 6 wireless zones, each zone can be equipped with many accessories* 5 ... up battery: NI-HI AAA*6 DC7.4V* Static current: Is <25mA* Alarm current: Ia <40mA* Wireless receive frequency: 315 MHZ (for ...