gsm alarm , Metal Case GSM landlne Alarm System ,

The Metal Case GSM Alarm System can auto check whether there is gsm/telephone line available, GSM and landline auto switch, when there is analarm, auto dial before auto send SMS to the numbers you set,When there is telephone line available, the GSM only send SMS, not dial. (the telephone would dial), when there is no telephone line available, the GSM would dial after sending out SMS. It also has the following advantages: 2 : 85 event log 3. Unique watchdog function, 4: 12 seconds self recording voice message 5 : Remotely controlling 6 : Timed Auto-arm/disarm 7 : Entry/Exit delay, voice prompt both when arming and being triggered 8 : Line sensing 9 : Built in TIMER IC, 10 : Mains Fail alarm. 11 : Built-in high capacity rechargeable battery, auto charge/discharge 14 : each zone can seperately programmable: seperately armed/disarmed, exit/entry delay, 24 hours zone, sounder/silent when alarming, armed/part armed zone sepeately choosen 15: 7-wire connection to any zone . 44-wireless connection to any zone, without wired sensor, 51wireless sensor in all 16 : Zone type inquiring and programming at random (Zone type: watchdog zone, exit/entry delay, 24 hours zone, sounder/silent when alarming, armed/part armed zone, sensor/no sensor in the zone) 17 : multimode arming methods: Away arming, Part arming, 24 hour arming, and every zone could be separately armed/disarmed 18 : Low voltage display: Key Fob Key Fob seek help with/without sounder 19 : Siren could be set to sound when away arming