Which lock is this? The Yale Real Living Key Free Push Button Deadbolt B1L (model YRD110). It has a push-button keypad and no keyhole.

How do I know the batteries are low? The status light on the keypad flashes red, and your panel or the Alarm.com app may show a low-battery warning for the lock.

Can I change them myself? Yes, in about five minutes. The lock doesn’t need to be paired again, and your codes stay as they are.

You’ll need: a screwdriver and four new AA alkaline batteries. Don’t mix old and new.

1. Unlock the door first. The bolt must be pulled back before you put new batteries in.
2. On the inside of the door, loosen the screw on the battery cover of the inside part of the lock, and take the cover off.
3. Take out all four old batteries and put in four new AA alkaline batteries, matching the + and − marks.
4. Don’t press the small reset button while the batteries are out or going in. Holding it as the batteries go in erases every code, including the master code.
5. Put the cover back on and tighten the screw.
6. Test it: lock and unlock it from the keypad, then from the Alarm.com app. The app may take a few minutes to update.

Locked out with dead batteries? Hold a 9-volt battery against the two terminals below the keypad, either way round. That powers the lock long enough to enter your code and unlock the door. Then change the AA batteries.

Still showing low battery after a few minutes, or the lock won’t respond? Contact CommTech Systems at 866-729-2853, or ask in the chat for a service request.

Prefer to watch? See the video below.