If nothing rings indoors when someone presses the Tapo D210, these are the checks from Tapo’s chime guides. The same doorbell is also sold as the Tapo TD21, so these steps work for both.

What This Problem Means

The press reaches the app, but your chime is not paired, not compatible or not powered the right way.

Common Symptoms

• No sound indoors
• The app alerts but the chime is silent
• The old chime stopped working after fitting

Safe Checks You Can Try

1. Know which chimes work

Tapo’s chime guide says battery-only doorbells such as the D210 cannot ring an existing chime. Use a Tapo hub or a Tapo chime.

2. Pair the chime

Tapo says to pair the chime under the doorbell’s Settings > Doorbell > Paired Chimes. Tapo and Kasa chimes only work with their own brand.

3. Know what still works

Tapo says if the doorbell is offline in the app but still on Wi-Fi, the chime still rings. If it is off Wi-Fi or the battery is flat, it does not.

4. Charge the battery

A flat battery is the most common reason a battery doorbell goes offline. Check the battery level in the Tapo app and charge it fully with a USB cable and adapter.

5. Update the app and firmware

Install the latest Tapo app, then update the doorbell’s firmware from its Device Settings.

When To Contact Support

If none of these checks fix it, contact Tapo support through TP-Link’s UK support site. Have the model and hardware version ready: Tapo says both are on the label on the doorbell.

Last resort: factory reset. Check the installation guide for where the Reset button is on the Tapo D210; Tapo’s reset guide covers its cameras. You will then need to set it up again in the Tapo app. Removing it in the app (long-press its card, or Camera Settings > Remove) also resets it; Tapo says a Tapo Care plan stays on your account.