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Replacing Batteries in the Door and Window Sensor

Solution

Follow the instructions below or watch the video for steps to replace the battery in the Cox Homelife Sensors.

Sercomm SZ-DWS08 CR2450 Battery (1)
Image of Sercomm SZ-DWS08 Door / Window Sensor Image of CR2450 Battery
  1. Remove sensor cover.
  2. Remove battery from sensor.
  3. Insert the new battery, observing the correct polarity.
  4. Dispose of the old battery properly, as recommended by the battery manufacturer.
  5. Replace the sensor cover.
Visonic Brand MCT-320 CR2 Battery (1)
Image of Door and/or Window Sensor Image of CR2 Battery

Watch the video.

  1. Insert a small flathead screwdriver into one of the small notches located on the same side as the magnet.
  2. Twist the screwdriver to pop off the sensor cover and set it aside.
  3. Remove the old battery and dispose of it properly, as recommended by the battery manufacturer.
  4. Replace with the new battery.
  5. Push the cover back on the sensor until it clicks into place.
Visonic  MCT-350 CR2450 Battery (1)
Image of Door and/or Window Sensor Image of CR2450 Battery

 

  1. Press down on the battery cover.
  2. While pressing down, slide the cover to the side to open it.
  3. Push against the clip and lift the old battery from the slot below it.
  4. Dispose of the old battery properly, as recommended by the battery manufacturer.
  5. Replace with the new battery.
  6. Slide the cover back on the sensor until it clicks into place.

Note: This model is not available in Arizona, Las Vegas, or California.

SMC Brand CR2 Battery (1)
Image of Door and/or Window Sensor Image of CR2 Battery

Watch the video.

  1. Find the locking mechanism tab located on the narrow side of the sensor with the LED light pointing towards it.
  2. Press the locking mechanism using a screwdriver until the back cover pops off.
  3. Remove the old battery and dispose of it properly, as recommended by the battery manufacturer.
  4. Replace with the new battery.
  5. Replace the back cover by sliding the locking tab back into place on the sensor.
Sercomm SZ-DWS04 CR2032 Battery (1)
Image of Door-Window Sensor - Sercomm Image of CR2032 Battery
  1. Find the notch located on the shorter side of the sensor.
  2. Using your finger, pry the cover from the base.
  3. Remove the old battery and dispose of it properly, as recommended by the battery manufacturer.
  4. Replace with the new CR2032 battery, the + should be facing you.
  5. Push the cover back on the sensor until it clicks into place.
Visonic Brand (Auxiliary) CR2 Battery (1)
Image of Auxillary Sensor Image of CR2 Battery

Watch the video.

  1. Remove the cover-securing screw with a Phillips screwdriver and set it aside.
  2. Pry the base from the cover and set it aside.
  3. Remove the old battery and dispose of it properly, as recommended by the battery manufacturer.
  4. Insert the tab-like base until it catches with the cover into the base’s tab openings.
  5. Close the sensor and replace the screw.

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