... in battery during power failure Two network PSTN and GSM alarm system 1. Large LCD English blue back-light display, ... configuration via phone ( handset ) or SMS. Messages to System Setup text messaging costs associated with the alarm panel. 7 ... main products are Home PSTN/GSM Security Alarm System, 3G Alarm System, GSM Power Alarm, Video Monitoring system, Wireless Remote controller, RF Transmitter ...