Below Is A Professional Review Of Our Security System. By A Respected Well Known Review Company. Touch keypad on the panel, big LCD display to show SETUP menu. Built-in GSM antenna inside of the panel. System can provide menu with multi-language, like polski, Cestina, Spanish, Russion etc, which are customized by clients. GSM 850/900/1800/1900 MHZ network. Support 30 wireless zones+ 4 wired zones, support 1 more replay output port, 1 +-12V output to support home appliance. User can record 10s alarm voice message into the system. Be compatible to Contact ID protocol central monitor station(CMS). System can be added the wireless strobe siren, wireless keypad, wireless doorbell button, wireless video camera as per customized requirement. Quick alarm on the panel for medical alarm, fire alarm and burglary alarm. User can make a call to other number on the panel, and also can inquiry the SIM card balance directly by call. 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. Quick call max 3 preset group of numbers on the panel. Siren setting: Open or close the siren separately for each zone. SMS alert for temperature alarm, temperature range is 00°C-70°C. <35mA (when not charging). Built-in Li-Ion backup battery. 3.7V 800mAH(rechargeable). Receiving and emitting range. The item "I WORKED 4 ADT Dealer 14 YEARS Wireless Home Security Alarm System Auto Dialer" is in sale since Sunday, November 08, 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.