v102 0 Posted October 3, 2016 Hello, I am trying to connect my DVR with a GSM alarm system. The idea is when the alarm is armed, the DVR cameras should act as motion detector and send a signal to the alarm when there is movement. That it turns calls my mobile. On its own each system works fine. I am a little confused with always open and always closed, also I have read that I need to use EOL resistors. Example attached. Please see the connections on each device, photos attached. Thanks Share this post Link to post Share on other sites
