... 12hours GSM Frequency:900/1800/1900Mhz Alarm Receiver,GSM Receiver,home Alarm ReceiverThe GSM Alarm Receiver R-01 is special for receiving ... downloading to Computer through the PC Programmer.The GSM Alarm Receiver equips Speaker and Microphone, once any incoming calls, will ... information will automatically display on the LCD;2. Neither to design any electric map, nor run sophisticate systems, all of ...