Detailed Product Description GSM alarm, wireless GSM alarm system, wireless GSM alarm, home GSM alarm, GSM alarm system, GSM burglar alarm, GSM security 1. Wireless type, easy to install, without phone line.2. Remote control, convenient.3. Password protected4. SMS to enable arm/disarm, siren5. High siren volume is to scare away intruders6. SMS and auto dial up three phone numbers, locale ...