How to replace the sensor switch: Hot topics and operation guides on the Internet in the past 10 days
Recently, the topic of smart home and electrical appliance repair has soared in popularity on social platforms, and tutorials on replacing sensor switches have become the focus of searches. This article combines the hotspot data and practical steps of the entire network to provide you with a detailed guide for replacing the sensor switch.
1. Statistics of hot topics in the past 10 days

| Ranking | hot topics | Search volume (10,000) | Main platform |
|---|---|---|---|
| 1 | Smart Home DIY Makeover | 45.6 | Douyin/Xiaohongshu |
| 2 | Sensor switch troubleshooting | 32.1 | Baidu/Bilibili |
| 3 | Zero basic electrician tutorial | 28.7 | Zhihu/Kuaishou |
2. Necessary tools for replacing sensor switches
| Tool name | Purpose | Security level |
|---|---|---|
| Insulated screwdriver | Remove the panel | Essential |
| Test pen | Detection line | key |
| electrical tape | Insulation treatment | Essential |
3. Detailed replacement steps
The first step: power off operation
1. Turn off the circuit breaker of the corresponding circuit in the distribution box
2. Use a test pen to confirm that there is no power in the line
3. Post a "Under Maintenance" warning sign
Step 2: Remove the old switch
1. Remove the decorative panel with a screwdriver
2. Record the original wiring position (it is recommended to take photos)
3. Loosen the terminal screws
Step Three: Install the New Switch
1. Connect the wiring according to the old switch wiring diagram
2. Live wire (L) and neutral wire (N) need to be clearly distinguished
3. Aim the sensing module at the detection area
Step 4: Functional testing
1. Wait 30 seconds for initialization after restoring power.
2. Test the sensitivity by hand
3. Adjust the delay shutdown time (if necessary)
4. Solutions to common problems
| Problem phenomenon | Possible reasons | Solution |
|---|---|---|
| The switch stays on | Sensitivity set too high | Adjust the potentiometer to reduce sensitivity |
| Unable to trigger switch | Power supply polarity reversed | Check the neutral live connection |
5. Safety precautions
1. Make sure to turn off the power completely before operation.
2. No live work is allowed in humid environments.
3. For complex wiring, it is recommended to contact a professional electrician.
4. The new switch must comply with the GB16915 national standard
According to e-commerce platform data, sales of sensor switches increased by 67% year-on-year in the past week, of which human body sensor types accounted for 82%. It is recommended that consumers look for CCC certified products when purchasing, and choose an appropriate detection distance according to the installation environment (generally 2-8 meters is appropriate).
With the above structured guidance, even novices can safely complete sensor switch replacement. If you encounter special wiring conditions, it is recommended to retain the original instructions or consult the manufacturer for technical support. Under the craze of smart home renovation, mastering basic electrician skills will bring more convenience to life.
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