Automatic Connection & Sleep ModeThe monitor automatically sleeps/wakes up by movement detection or you may wake it up by tapping the screen. For tow vehicle with trailer, the TPMS automatically connect/disconnect by distance detection. Professional Support & Tips1) Keep other electronic devices away from the monitor. 2) Signal booster is recommended to reduce interference between the sensors and the monitor. 3) Feel free to get professional support from VESAFE for any problems.