Lynx Touch - Motion Detector Batteries

Insert flat screwdriver into bottom slot, twist to remove cover, battery is CR123A Lithium

A digram of a lynx touch motion detector with an arrow indicating where a flat head screwdriver can be inserted to open it, and two CR123A batteries inside the motion detector

Press bottom tab to remove cover, battery is CR123A Lithium

A digram of a lynx touch motion detector with an arrow indicating where to push to open it, and a CR123A battery inside the motion detector