Find the image of your door window sensor below to view instructions on how to complete your battery replacement.
DSC WS4945 Door Window Sensor:
Insert a small screwdriver into the slot, twist to remove the cover, then remove and replace CR-2 Lithium battery
DSC WLS907-433 Door Window Sensor:
Press end latch to remove the cover, then remove and replace 3 AAA Alkaline batteries
Ecolink WST-200/WST-201 Door Window Sensors:
Slide cover up to remove, then remove and replace CR2032 Lithium battery ensuring the + side is face up
