... module ,one remote keyboard, two remote controllers, one PIR, one door magnetic sensor., one siren output, one adaptor, speaker(optional), ... compatible with CCTV surveillance and centre monitoring system.1. Wireless type, easy to install, without phone line.2. Remote control, convenient.3 ... to scare away intruders6. SMS and auto dial up three phone numbers, locale monitoring start on.7. SMS to recheck ...