* Excellent for burglar alarm system, open the phone line for robotphone
* Support Tri Band GSM 900MHz, 1800MHz and 1900MHz
* SIM card holder embed
* RJ11 input
* Makes and receives calls via telephone, cordless phone, or mobile phone
* 110-260VAC 50/60Hz to 7.5V (12V available)
* Battery backup Stand by: 20hrs, continued talking 2hrs
* Can use with a ordinary homephone machine
* Operating temperature -20 +55C* Storage temperature -40 +85C
* Relative humidity 5%~95%

* Auto restart

* Alarm for network lost