DSC-PG9975 Battery Replacement
To Replace the Batteries: 
Before you start, you will need:
- One new CR2032 Batteries (purchased online or from a local retailer) 
- 4mm flat-head screwdriver 
To replace the batteries for your Door & window security contact (PG9975), please follow the instructions below:
- Make sure the system is disarmed and remove the device from its original position. 
- Insert a 4 mm flat screwdriver into the slot of the plastic cover, and flex the slot to open that side of the plastic cover. 
- Insert the screwdriver into the slot on the other side of the plastic cover and repeat the procedure, and then remove the cover. 
- Insert a new CR2032  lithium coin battery at an angle while observing battery polarity and then press down on the battery. 
- Replace the cover and put the device back to its original position. 
- After restoring a low battery trouble, the system may take up to 5 minutes to clear the trouble signal. 
 
 
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