Tech Tips Video Replacing a Battery in a DSC WS4904P Wireless Motion Detector

This videos will show you how to replace a battery in a DSC WWS4904P Wireless Motion Detector. CAPTION: You may need to change a battery at some point in the life of a DSC Power Series Security Alarm System wireless motion detector, usually every 4 or 5 years. This can prevent service calls and false alarms from your system. Tools Needed: Small Phillips head screw driver Replacement battery (CR123 or 123A) Procedure: Call Fire Monitoring of Canada’s ULC monitoring centre prior to commencing any work. DSC security system motion detectors are installed on a mounting plate for easy removal, so the first thing we have to do is take the unit off of that mounting plate. On the bottom of the motion detector, there is a small screw. Use your Phillips head screw driver to remove the screw. Keep this in a safe place. Your keypad may start to beep when removed from the wall. This normal. Using one hand, firmly grip the motion detector and slide it up and off of the mounting plate. On the back of the motion, at the bottom there is a small sliding door to the battery compartment. Using both your thumbs, slide the door off of the unit. Remove both batteries and replace with the new CR123 battery. Re-insert the rear battery door. To re-insert the motion on the wall mount, line the holes on the rear of the motion detector up with the tabs on the mounting plate and slide the motion sensor down until you hear the click. Call our monitoring station back to makes sure...