Disconnect the system and check that there are no zones with failure or open. The system should be “READY”. If you see “NOT READY” on the screen, one or more zones or sectors are open or with some type of technical failure. In order to detect these zones, press the key “READY”. Check that all the doors and windows are close and that nobody is moving inside the zones protected by infrared detectors. Once the zones are OK, the screen will display the word “READY”. This means that the system is ready to arm.