If your "Master Control Unit" starts beeping and the status tells you your "Motion Detector" has a “Low Battery”, it's time to replace the battery in your "Motion Detector".
Use AA 1.5 Volt Alkaline batteries with this product. Use popular brands like Energizer or Duracell.
Follow the steps below to open the "Motion Detector" and access the "Battery Compartment"...
A. Press the top tab to remove the "Mounting Plate".
B. Pull the "Motion Body" and "Front Cover" away from each other. You'll need to press down on the two tabs at the top and tab at the bottom.
C. Replace the batteries in the "Motion Body".