... be played when you received the alarm calling) 7. Support alarm receiving center control the system arm or disarm. 8. Support ... easily. For the industries such as bank, post office, store and so on, it can be snugly stick on the ... main products are Home PSTN/GSM Security Alarm System, 3G Alarm System, GSM Power Alarm, Video Monitoring system, Wireless Remote controller, RF Transmitter/Receiver module ...