... updated advanced GSM prepaid module made by Shenzhen ABS Technology CO.,LTD. It features eleven different wireless protection zones, two ... etc. compatible with CCTV surveillance and centre monitoring system.1. Wireless type, easy to install, without phone line.2. Remote ... . Panel Size: 180mml×130mmw×32mmh10.Standard package : one GSM module ,one remote keyboard, two remote controllers, one PIR, one ...