A Tapo T110 can register a door opening without producing the hub sound you expected. Verify the event and the action separately before buying a second sensor.
Run a controlled check
TP-Link lists a compatible hub as a requirement. Confirm the hub and sensor models in your app. Before permanently attaching the pieces, hold them in their intended positions and compare the app state with the physical door open and closed. Use the manufacturer’s alignment instructions and make sure the frame does not obstruct the installation.
Decide what to change
Once the event is reliable, test the intended alert or hub action while someone is present. If the app sees the door open but the hub is silent, inspect the rule and the hub’s supported actions instead of moving the magnet. If the event itself is missing, address sensor placement and connectivity first. Treat this as a convenience test, not a security guarantee.
Worked example
Keep a three-row test log: door closed and app says closed; door open and app says open; opening the door triggers the chosen chime. If the first two pass and the third fails, you have narrowed the issue without changing the mounting position.
Documentation and next step
See the manufacturer’s instructions for supported settings and model requirements. For a related setup decision, see tapo s200b smart button hub cost check.
