... compensation, low battery alarm and so on. It emits wireless digital signal to start the control panel for alarm through ... 9VDC Li-ion & manganese battery 500mAhWorking current: static < 30µA; alarm < 16 mAWireless parameter: frequency 315MHz or 433MHz, ... flashes for about 2 seconds, the detector sends out the wireless signal, meanwhile, the control panel should receivethe signal. After ...