6 User can record 10s alarm voice message into the system 7 Be compatible to Contact ID protocol central monitor station(CMS) 8 System can be added the wireless strobe siren, wireless keypad, wireless doorbell button, wireless video camera as per customized requirement. Special feature: 9 Quick alarm on the panel for medical alarm, fire alarm and burglary alarm 10 Intercom call. User can make a call to other number on the panel, and also can inquiry the SIM card balance directly by call 11 Inquiry alarm host status via SMS: Edit SMS message:”Password+C”, and send it to the sim card in the host, the host will send SMS ARM OK or DISARM OK response to user 12 Quick call max 3 preset group of numbers on the panel 13 Siren setting: Open or close the siren separately for each zone 14 SMS alert for temperature alarm, temperature range is 00°C-70°C Specification: Working power: AC=100240V, DC=12V 1A Static current: <35mA (when not charging) Alarm current: <120mA Built-in Li-Ion backup battery: 3.7V 800mAH(rechargeable) Standby: around 24 hours Full charging time: 8hours 4-Band: 850/900/1800/1900Mhz GSM transmit power: 2W Receiving and emitting range: >100m(non-block). The item “TOP SALES REP 4 ADT SECURITY GSM Wireless HOME Security SYSTEM Burglar ALARM” is in sale since Friday, September 04, 2015. This item is in the category “Consumer Electronics\Home Surveillance\Surveillance Security Systems”. The seller is “coffeecrazed8503″ and is located in Spring Hill, Kansas. This item can be shipped worldwide.