... display 2,GSM+PSTN dual network 3,8 wired + 30 wireless zones 4,Work worldwide Model ... Delay + Alarm Beep Setting+ Call-in time setting+ Wireless Program+ Zone Attribute Setting+ User password + Program Password ... + Reset + Alarm History + Status History 4. 30 wireless zones + 8 wired zones, every zone attribute, name, ... with us freely......... Wired/Wireless GSM+PSTN Dual-network Home Alarm System(L&L-816 ...