QOLSYS Door/Window Sensor - Battery Replacement

QOLSYS Door/Window Sensor - Battery Replacement

Qolsys QS1135-840 Door/Window Sensor:

Insert a screwdriver into the slot found on the top/bottom of the cover to remove, then remove and replace 2 CR2032 batteries. When closing the sensor, ensure it is snapped together tightly and aligned properly to avoid a tamper.