Here are some simple tips that will help you if you need to remove an older security system. Contact the Alarm Company. Contact the Alarm Company. Disconnect the Sirens. Pull Off Control Panels. Remove the Old Battery Packs. Remove Other Components. Wiring. Contact the Alarm Company. Click to see full answer. In this regard, how do you disconnect a house alarm? Here’s how to shut down a burglar alarm system: Find the panel. The burglar alarm panel will be in a small metal box or enclosure. Open the box. The enclosure will have a cylindrical lock on it. Unplug power. The power supply for burglar alarm systems is a small plug-in type transformer. Unplug backup battery. One may also ask, should I remove old security system? Removing an existing wired home security system may seem like a daunting task. However, this is not the case. In most cases, you do not need to remove the entire system. This is especially true if you are upgrading your system or replacing it. Moreover, how do you remove a wired alarm sensor? You can remove a wired recessed sensor by pulling it out from the frame of the door or window. Then do the same with its magnet. How Do I Remove a Wired Recessed Sensor? Pull out the sensor and its magnet. Disconnect the wire. Pull out the wire. Complete the removal. How do I disable my old alarm system? Here are some simple tips that will help you if you need to remove an older security system. Contact the Alarm Company. Disconnect the Sirens. Pull Off Control Panels. Remove the Old Battery Packs. Remove Other Components. Wiring.