Xiaomi motion sensors are some of the most popular smart home devices because of their accessibility and ease of integration. However, even such reliable gadgets sometimes require resetting: after a firmware failure, when selling a device or if the sensor has stopped correctly detecting movement. Unlike smartphones, where the reset is performed through a menu, motion sensors do not have a screen interface, which raises questions among users.
In this article, we will discuss all the current methods of reset for different models, from classic Mi Motion Sensor to Aqara devices. Particular attention will be paid to the nuances that the manufacturer does not always mention in the official instructions: for example, why the sensor may not appear in the Mi Home application after a reset or how to avoid losing communication with the hub.
When you need to reset the motion sensor Xiaomi
It's not worth resetting the sensor settings for any malfunction, but here are the specific situations where the procedure is justified:
- 🔄 Sensor does not respond to movement after updating the firmware hub or the Mi Home app.
- 📱 The device has disappeared from the list in the application and is not added again.
- 🔋 After replacing the battery, the sensor flashes red and does not connect.
- 🏠 You move or sell a device and want to remove it from your ecosystem.
- 🔄 The sensor falsely triggers (e.g., reacts to pets, although it has previously ignored them).
If the problem doesn’t make it to this list, try rebooting the hub (like Xiaomi Gateway) first or checking the sensitivity settings in the app. Resetting is a last resort, as you’ll have to reset the automation and scripts after that.
Preparation for resetting: what to do in advance
Before you drop the sensor, follow these steps to avoid the typical errors:
- Check the battery power. If the indicator flashes red or the battery is discharged below 20%, the reset may not be correct. Replace the battery with a new one (the CR2450 is recommended for most models).
- Make sure the hub is on and connected to the Internet, and the sensor will look for the nearest gateway to re-pair after the reset.
- Write down the current automation settings (if any) and after resetting, all the scenarios associated with the sensor will have to be manually restored.
- Disable ad blockers (such as AdGuard or Pi-hole) if you use them on your router. They can block Xiaomi servers, which will prevent reconnection.
If the sensor is connected to Apple HomeKit via Mi Home, the reset will result in its exclusion from the Apple ecosystem, and to return the device, you will need to re-add it to HomeKit through the Mi Home app.
Make sure the hub is on and connected to Wi-Fi|Check the battery charge of the sensor|Record or photograph the automation settings|Shut down. VPN/router-blocker|Prepare a new battery (if the battery is discharged)-->
Ways to reset the motion sensor Xiaomi
The reset method depends on the sensor model, and here are the current instructions for the most common devices.
1. Classic method (for most models)
This method works for Mi Motion Sensor (round white case), Mi Home Security Motion Sensor and most Aqara devices:
- Remove the battery from the sensor.
- Press and hold the reset button (usually located next to the battery compartment).
- Without releasing the button, insert the battery back.
- Hold the button for another 10-15 seconds until the indicator flashes yellow quickly (some models have blue).
- Release the button. Sensor is reset and ready to reconnect.
Note: Aqara Motion Sensor P1 sensors have a reset button hidden inside the case, and to reach it, gently tuck the lid with a flat cerca screwdriver of the logo.
2. Reset via Mi Home application (alternative method)
If the physical reset didn’t work or the button is damaged, try removing the sensor through the app:
- Open Mi Home and go to the Devices section.
- Find the motion sensor in the list and tap it.
- In the upper right corner, press ⋮ → Remove the device.
- Confirm deletion. The sensor will be removed from the network, but its settings will be stored in the device's memory.
- For a complete reset after removal, remove the battery for 30 seconds.
This method is less reliable than a physical reset, but can help if the sensor does not respond to the press of a button.
3. Aqara sensor reset (via Gateway)
Aqara devices (such as the Motion Sensor P1 or FP1) sometimes require a hub reset:
- Open the Aqara Home app (not Mi Home!).
- Go to Hub Settings → Further → Delete the device.
- Select the sensor from the list and confirm the removal.
- Remove the sensor battery for 1 minute, then insert back.
- Add the device again through Add the device → Motion Sensor.
Important: Aqara sensors aren't always compatible with Mi Home.If you use both apps, resetting in one could disrupt the other.
| Sensor model | Resetting method | Indication of successful discharge | Notes |
|---|---|---|---|
| Mi Motion Sensor (round) | Button + battery | Yellow blinking (5 times) | The button is located next to the battery compartment. |
| Aqara Motion Sensor P1 | The button inside the case | Blue blinking (3 times) | It is necessary to open the body carefully. |
| Mi Home Security Motion Sensor | Button + battery | Red flashing (1 time) | After reset, you need to reconnect to the hub |
| Aqara FP1 (wall) | Through the Aqara Home app | No indication. | Required removal via hub |
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If the sensor doesn't appear in the app after resetting, try restarting the hub (Xiaomi Gateway or Aqara Hub). To do this, disconnect it from power for 10 seconds, then turn it on again. This often solves device detection problems.
What to do if the reset does not help
If the sensor still doesn’t work after reset, check the following points:
- 🔋 Battery: Make sure you use the right type (CR2450 Poor or old batteries can cause failures.
- 📶 Distance to hub: The sensor must be within a 10-15-meter radius of the lock. Walls and furniture reduce communication range.
- 🔄 Hub firmware: Update the Xiaomi Gateway or Aqara Hub firmware to the latest version via the app.
- 🛠️ Physical damage: Check the case for cracks or moisture. Xiaomi sensors have no water protection (except for models marked with a mark) IPXX).
If the sensor is still not detected, try resetting the hub:
- Shut the hub off the power.
- Press and hold the reset button on the hub body.
- Without releasing the button, connect the power back.
- Hold the button for another 10 seconds until the indicator starts flashing orange.
Critical information: once the hub is reset, all connected devices (including lamps, sockets and other sensors) will be turned off, and they will have to be added to the app again.
How to check if the sensor is physically working?
How to avoid problems after resetting
After a successful reset, follow these guidelines to ensure that the sensor is stable:
- 🔄 Update the firmware: After adding the sensor, check for updates in Device Settings → Firmware update.
- 📱 Configure detection zones: In the Mi Home app, you can set sensitivity and delay time (for example, ignore movements lasting less than 2 seconds).
- 🐕 Turn off animal response: In sensor settings, activate the option to Ignore Small Objects (not available for all models).
- 🔋 Monitor battery power: Enable low charge notifications in device settings.
If the sensor is connected to Google Assistant or Apple HomeKit, you'll have to reset the integration after the reset.
- Remove your device from a third-party service (e.g. Google Home).
- Add the sensor back to the Mi Home.
- In the device settings in Mi Home, find the Integration section and reconnect to the desired service.
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After reset, the motion sensor loses all previous automation settings. To avoid resetting them, export scripts to Mi Home before reset (Automation → Export).
Frequent Mistakes and How to Avoid Them
Users often face typical problems when resetting Xiaomi sensors, and here are the most common ones and ways to solve them:
⚠️ Attention! Never use metal objects (such as paper clips) to press the reset button.This can damage the contacts. Use a plastic shoulder blade or toothpick.
- 🔴 Sensor does not blink after reset: – Check the polarity of the battery (plus should be on top). – Try another battery (possibly the current one is discharged). – Make sure the button is pressed to the end (sometimes a significant effort is required).
- 📱 Sensor does not appear in the app: – Restart the hub and smartphone. – Make sure the correct region is selected in the Mi Home app (e.g. Russia or Mainland China). – Check if the antivirus is blocking or not. VPN Connecting to Xiaomi servers.
- 🔄 After reset, the sensor is unstable: - Update the firmware of the hub and sensor. - Move the sensor closer to the hub (optimal distance - up to 10 meters). - Make sure there are no sources of interference nearby (microwave ovens, wireless speakers).
If the sensor still doesn't work, try to reset it through another hub (if you have one), sometimes the problem lies in the gateway itself, not in the sensor.