1.GSM SMS Wirelsss Alarm System 2.OEM Lowest price,best quality 3.CCC,CE,ISO 4.16wireless,5wired 5.link with wireless alarms Description:1.GSM System,16 wireless alarm zone and 5 wired zone set around alarm zone ,internal zone,24 hrs zone ,voice alarm zone and silent alarm zone to comply with kinds of place .2.This GSM alarm system use Wavecom GSM module support the GSM 900/1800MHZ.3.You also can ...