Xiaomi’s smart buttons (including the Aqara and MiJia models) have become an integral part of the smart home ecosystem, allowing you to control devices with a single click. However, many users face the need to disassemble them — whether for battery replacement, resetting or repair. Unlike classic switches, smart buttons have hidden mounting mechanisms, making them a non-trivial task to open.
In this article, we will discuss all the current ways of opening for popular models (including the Aqara Wireless Mini Switch, MiJia Smart Button and others), list the necessary tools and warn against typical errors that can lead to failure.
If you’ve never disassembled Xiaomi’s smart gadgets, we recommend that you first read the safety rules to avoid damage to the case or internal contacts. For experienced users, immediately go to the step-by-step instructions for specific models.
⚠️ Safety rules before disassembly
Before you start opening the button, consider that doing the wrong thing can damage the seals (which will deprive you of warranty), break the latches or even short-circuit when you come into contact with the battery.
- 🔋 Remove the battery (if possible) before disassembly – this will eliminate the risk of contact closure tool.
- 🧲 Do not use metal objects to tamper with the case - only plastic mediators or special shoulder blades.
- 📸 Take a picture of the original position of all parts if you plan a complete disassembly (useful for reverse assembly).
- 🔧 Do not apply excessive force - if the body does not respond, then you missed the hidden latch.
⚠️ Attention: Models with IP-Certified (e.g. Aqara Opple) have a sealed body, and disassembling them without special tools can disrupt water protection!
If the button is mounted on a double-sided 3M tape (like the MiJia Smart Button), do not try to tear it off by force - this will damage the sticky layer. Instead, tuck the body from the side with a thin spatula, gradually weakening the clutch. For models on a magnetic mount (for example, the Aqara D1), it is enough to pull the body up with a force of ~ 5 kg.
Tools for Opening a Smart Button
For a clean disassembly without damage, you will need:
| Tool. | Appointment | The alternative |
|---|---|---|
| Plastic mediator (0.5–0.7 mm) | Fake-up of the hull latches | Guitar mediator, credit card |
| Suction cup (∅20-30 mm) | Disconnection of the front panel in models with a smooth surface | Sticky tape (paint scotch) |
| Tweezers with curved ends | Removing the CR2032 battery | Toothpick (careful!) |
| Screwdriver T4/T5 | Spinning screws (rarely, in older models) | Unnecessary SIM-card (for forgery) |
Important: Avoid metal screwdrivers and knives — they leave scratches on the plastic and can close contacts. For models with hidden screws (for example, under a sticker), use a dryer to soften the glue: warm the case for 30 seconds at minimum power, then gently apply the sticker.
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If there is no mediator at hand, take a plastic card (bank or discount) and grind its edge with sandpaper - you will get an improvised spatula.
Step-by-step instructions for popular models
Aqara Wireless Mini Switch (WXKG01LM/WXKG11LM/WXKG12LM)
The most common model with a round shape and magnetic mount opens as follows:
1. Remove the button from the magnetic holder (pull up)
2. Take a plastic pickup and insert it into the gap between the front and back of the case
3. Carefully lead the mediator in a circle, snapping the clamps (there are 4 pieces)
4.Remove the back cover and remove the battery CR2032-->
If the body fails, check if it is left on a hidden latch near the battery socket. The WXKG12LM (2022) has an additional lock, which must be pressed with a thin object through the hole next to the reset button.
MiJia Smart Button (WXCJQ01LM)
A square button with double-sided tape and touch control, and the key is not to damage the sticky layer.
- Warm up the back of the body with a hair dryer for 20-30 seconds (temperature ~50 ° C).
- Put the mediator angle of the body on the side of the charge indicator.
- Slowly drive the shoulder blade along the side, separating the scotch from the surface.
- After removing the lid, remove the battery by pulling the tongue (do not use tweezers!).
⚠️ Attention: This model doesn't have mechanical latches, it only holds on tape. If you pull it, you can pull the contact pads off!
Aqara Opple (6-button panel)
Smart panel with IP54-It's a security and screw-mounting thing, and it takes patience to disassemble:
- 🔧 Unscrew 2 screws. T5 on the back panel (under rubber plugs).
- 🧲 Put the mediator on the front panel from the "Home" button".
- ⚡ Disconnect the display plume (if any) - do not pull the wires!
The 2023 Opple has its screws hidden under a decorative sticker with a logo, remove it with a hair dryer, then wipe the glue residue with alcohol.
Battery replacement: nuances and errors
In 90% of cases, disassembling a smart button involves replacing a battery.
- 🔄 Type of battery: CR2032 (3V) most models, CR2450 for Aqara Opple.
- ⚡ Polarity: The board usually has a marking "+" and -, but the MiJia Smart Button Pro has mirrored contacts!
- 🕒 Lifetime: The original battery is ~2 years with active use (50 presses/day).
Typical errors:
- Use an expired battery (check the date on the package!).
- Touching contacts with your bare hands can cause oxidation.
- Upside-down battery installation – Some models (Aqara D1) won’t turn on, but won’t show an error.
What if the button doesn’t work after the battery is replaced?
How to Reset the button Settings Without Disassembling
If the purpose of disassembly is to reset to factory settings, try to do without opening the case. Xiaomi/Aqara support the discharge through:
- 🔄 Reset button: Press the hidden button (usually next to the battery) for 10 seconds until the indicator flashes quickly.
- 📱 Application Mi Home/Aqara: Go to the Device Settings → General. → Reset.
- ⚡ Multiple Press: For the MiJia Smart Button Pro, press the main button 5 times in a row at 1 second interval.
Exceptions:
The Aqara Opple and Xiaomi Mi Smart Home Button (2023) require a physical reset via the plug on the board.
- Open the building (see the instructions above).
- Find the card labeled RST or Reset.
- Close the contacts with tweezers for 3 seconds (make sure the battery is removed!).
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Resetting through an app is the safest method, but it only works if the button is connected to the network, and if the device doesn't respond, you have to disassemble the case.
Repair and diagnosis of malfunctions
If the button has stopped responding to presses or flashes red, the reasons may be as follows:
| Symptoms. | Possible cause | Decision |
|---|---|---|
| He's not responding to pushes. | Battery sat down or contacts oxidized | Replace the battery, clean the contacts with alcohol |
| Blinks red 3 times | Hub connection error | Reset the settings and reconnect to Mi Home |
| The "slip" button. | Moisture or dust got under the membrane | Disassemble, dry with a hair dryer (cold air) and clean |
| Not defined in the annex | Firmware failure or antenna damage | Update the firmware through Mi Home → Device Profile → Update |
To diagnose the break of contacts, use a multimeter in the vertebrae mode:
- Install probes on the + and - battery compartment.
- If resistance is > 10 ohms, there is a cliff on the board.
- Check the circuit from battery to chip (usually labeled ESP8266 or CC2530).
⚠️ Warning: If you see darkened areas or bloated capacitors on the board, the device is not repairable, in which case it is safer to buy a new button (the price starts from 500). ₽).