... System + Auto DialingThis alarm system supports most of the wireless detectors, such as PIR sensor, magnetic gap detector, infrared ... output available to be used according to customers demands* Wireless intelligent study coding,easy to add or cancel detectors, ... 4V* Static current: Is <25mA* Alarm current: Ia <40mA* Wireless receive frequency: 315 MHZ (for Detectors & Remote Control)* Dimensions: ...