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How to change my Security and Automation batteries.


Before changing sensor batteries, make sure the system is not armed. If changing 24-hour sensors, please call 1 800 267-2001 to place your system on test.

How do I know when to replace my backup battery in my main panel?

A low battery icon will appear on your main panel. Unless you’ve had a power outage or the panel unplugged, this indicates that the backup battery has reached the end of its life.

Batteries replacement
Door sensor
  1. Push the grooved tab inwards to release sensor from back cover.
  2. Remove the old batteries.
  3. Replace with two new CR2032 batteries.
  4. Attach the sensor to the back cover. It should snap in place.
2GIG motion sensor
  1. To open motion sensor, remove the screw from bottom of the sensor and pull off the back cover.
  2. Remove the old battery.
  3. Replace with a new CR123A battery.
  4. Attach the sensor to the back cover and tighten screw.
Honeywell motion sensor
  1. To open motion sensor, push in tab at the bottom of the sensor and pull front of sensor away from the back cover.
  2. Remove the old battery.
  3. Replace with a new CR123A battery.
  4. Attach the sensor to the back cover and snap into place.
Glass break sensor
  1. To open the glass break sensor, turn the unit counter-clockwise to release it from the back cover.
  2. Remove the old batteries.
  3. Replace with two new CR123A batteries.
  4. Attach the sensor to the back cover and turn the unit clockwise to lock it into place.
Wireless keypad
  1. To open the wireless keypad, push the two tabs on the top side simultaneously and pull outwards.
  2. Remove the old batteries.
  3. Replace with two new CR2032 batteries.
  4. Attach the keypad back to the back cover and snap into place.
Keyfob
  1. To open the keyfob, unscrew the back and separate the two sides.
  2. Remove the old battery.
  3. Replace with a new CR2025 battery.
  4. Attach the two sides and secure them with the screw.
Water sensor
  1. To open the water sensor, push down the tab and pull the front cover off the back cover.
  2. Remove the old battery.
  3. Replace with a new CR15H270 or CR2 battery.
  4. Attach the sensor to the back cover and snap into place.
Carbon monoxide (CO) detector
  1. To open the CO detector, turn the unit counter-clockwise to release it from the back cover.
  2. Remove the old battery.
  3. Replace with a new CR123A battery.
  4. Attach the sensor to the back cover and turn the unit clockwise to lock it into place.
2GIG smoke detector
  1. To open the smoke detector, turn the unit counter-clockwise to release it from the back cover.
  2. Remove the old batteries.
  3. Replace with three new AAA batteries.
  4. Attach the sensor to the back cover and turn the unit clockwise to lock it into place.
Honeywell smoke detector
  1. To open the smoke detector, turn the unit counter-clockwise to release it from the back cover.
  2. Remove the old battery.
  3. Replace with a new CR123A battery.
  4. Attach the sensor to the back cover and turn the unit clockwise to lock it into place.
Wireless panic button
  1. To open the panic button, separate the top cover by placing a flathead screwdriver in the slot on the bottom right corner, between the top and bottom cover, and twist.
  2. Place a small flathead screwdriver in the slot between the metal clip and the battery and twist the screwdriver slightly while holding back one of the black plastic edges holding the battery.
  3. Replace with a new CR2032 battery.
  4. Attach the front and back covers and snap into place.
Image sensor
  1. To open the image sensor, slide the image sensor upwards to detach it from the back plate/mount.
  2. Remove the old batteries.
  3. Replace with two new AA lithium batteries.
  4. Slide the sensor into the back plate/mount.
Door lock
  1. Remove three screws from the back cover (one on each side and one on the bottom).
  2. Remove the back cover.
  3. Pull out the battery tray from the top.
  4. Remove the old batteries.
  5. Replace with four new AA batteries.
  6. Slide the battery tray back in.
  7. Attach the back cover.
  8. Reinstall the screws to secure.
Thermostat (GC-TBZ48)
  1. Using fingernails at the indents on the cover bottom, pull open the front panel (the thin front cover, not the main panel).
  2. Remove the old batteries.
  3. Replace with four new AA batteries.
  4. Place the front cover back on and snap into place.