Learn how to install or replace a battery in the SMC SMCSM02-Z Smoke Detector.
What you'll need
- Xfinity Home
- SMCSM02-Z Smoke Detector
- Two CR123A batteries
Difficulty
Medium
Do you need a battery?
Make sure you have batteries before you proceed. Visit your nearest retail store that sells batteries or click the button below to order your replacement battery kit.
Call us at 1-800-xfinity if you receive a low battery alert within 30 days of device installation.
How to install the battery
Before proceeding, please be sure that your system is disarmed and in Test mode. Working on devices while the system is armed can generate false alarms.
Did you know? Removing batteries without putting the system in Test mode could trigger an alarm, dispatch police/fire assistance, and may result in a fine for a false alarm.
Help protect our environment: Please properly recycle your discarded batteries. For your convenience, batteries are accepted for recycling at various locations. Check www.call2recycle.org or call 1-800-8-Battery (1-800-8-228-8379) to find a recycling location near you.
Is this your smoke detector? Make sure that your Smoke Detector looks like the one in the image below. If it does, you're in the right place to find out how to install a battery in your Smoke Detector.
- Put your system in Test mode.
- If you have removed the Smoke Detector from the wall/ceiling, turn the cover of the Smoke Detector until the alignment arrow on the cover points to the tab on the Smoke Detector's body.
If the device is still attached to the wall/ceiling, hold the top of the Smoke Detector, and turn it counterclockwise until it stops.
- Pull the body of the Smoke Detector away from the cover. If you have left the device attached to the wall/ceiling, the cover will remain attached once you've pulled the Detector away.
- Use your finger to slide the battery cover in the direction of the raised arrow lines and expose the battery compartment.
Take a Look. If a battery is already present, remove it by gently pulling the end of ribbon up until the battery is loose. Then, you can pull it free from the battery slot.
The battery compartment contains a diagram of the proper battery position with a symbol indicating which way the positive (+) end of the battery should be facing. - Pull back the spring-loaded battery slide.
- Insert two CR123A batteries over the ribbon in the slots, positioning the positive (+) end of the batteries as shown in the battery diagram.
- Align the tabs on the battery compartment with the slots on the battery compartment. Slide the cover down until it snaps into place.
- When the batteries are inserted correctly, a red indicator light will light up.
- If you're replacing the batteries, confirm that the low battery alert has resolved and the Detector appears on your list of connected devices in your touchscreen, Subscriber Portal or the Xfinity Home app.
- If you're replacing the batteries, confirm that the low battery alert has resolved and the Detector appears on your list of connected devices in your touchscreen, Subscriber Portal or the Xfinity Home app.
- If you have removed the Smoke Detector from the ceiling, line up the alignment arrow with the tab on the body of the Smoke Detector and turn the cover clockwise until it snaps into place. Remount it to the wall/ceiling.
Did You Know? You should take the opportunity to clean the sensor when you have the Smoke Detector removed from its mount. Clean the front and back of the Smoke Detector with a dry or damp (water only) cloth.
If the cover is still attached to the wall/ceiling, place the Smoke Detector body over the cover, and turn it clockwise until it snaps into place.
Additional information
Visit our Online Support Center to find common solutions.
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