Home Alarm System 1,Touch keypad,Big LCD display 2,GSM+PSTN dual network 3,8 wired + 30 wireless ... History + Status History 4. 30 wireless zones + 8 wired zones, every zone attribute, name, bypass, alarm delay, ... Adaptor*1User manual*1 FAQ of GSM Security System:1: About GSM frequency: it can support ... ,pls connect with us freely......... Wired/Wireless GSM+PSTN Dual-network Home Alarm System(L&L-816)