... .CE and RoHs gsm security alarm system to know which zone and detector triggeredModel name: REH320 GSM alarm is a remote ... language is english. 20 wireless zones and 4 wire zone. Each zone name can definite by user themselves so that they can ... 4 wire zones, every zone can be set different zone types. Such as emergency zone, internal zone, external zone, delay alarm zone;5. local language operation ...