WiFi Smart 4-Way Relay Module | Self-Locking Wireless Switch
WiFi Smart 4-Way Relay Module | Self-Locking Wireless Switch
WiFi Smart 4-Way Relay Module — Self-Locking, Interlock & Inching Wireless Switch
Take full control of your home automation setup with the Asia-Teco T1 WiFi Smart 4-Way Relay Module. This compact yet powerful wireless switch board supports three versatile operating modes — momentary (inching), self-locking, and interlock — and is compatible with both Android and iOS via the free eWeLink app. Whether you're automating lights, motors, gates, or other low-power circuits, this relay module delivers flexible, reliable remote control from anywhere in the world.
⚠️ Important Notes:
• The relays are dry-contact switches with no output — the AC/DC power supply input powers the PCBA only.
• Tap the work mode button manually to switch between operating modes.
• Inching mode: Two wiring options — turn ON for 1 s then auto-OFF, or turn OFF for 1 s then auto-ON.
• Self-locking mode: Remotely toggle connected devices ON or OFF instantly.
• Interlock mode: Available on 2-gang and 4-gang versions only; ideal for controlling AC/DC motors (e.g. forward/reverse).
Key Features
- 📱 App Control (eWeLink): Manage all four channels remotely from your Android or iOS smartphone, anywhere with an internet connection.
- 🔄 3 Work Modes: Momentary (inching), self-locking, and interlock — switchable with a single button press.
- ⚡ Wide Voltage Range: Operates on DC 5V–32V (or AC 220V) power input, making it compatible with a broad range of installations.
- 🏠 Smart Home Ready: Seamlessly integrates with eWeLink-compatible smart home ecosystems for scene automation and scheduling.
- 🔗 4-Channel Control: Control up to four independent circuits or devices simultaneously.
- 📐 Compact Form Factor: Slim 74 × 73 × 3 mm PCB board fits easily inside enclosures and electrical panels.
- ⏱️ Fast Response: Relay max release time of just 5 ms for near-instantaneous switching.
- 🚫 No High-Concern Chemicals: Compliant — contains no high-concern chemical substances.
Specifications
| Brand | Asia-Teco |
| Model | T1 |
| Operating Voltage | DC 5V–32V / AC 220V |
| Rated Current | 1A |
| Relay Max Release Time | 5 ms |
| Transfer Mode | WiFi |
| Compatible Systems | Android / iOS |
| Contact Load | Low Power |
| Dimensions | 74 × 73 × 3 mm |
| Country of Origin | Made in China |
What Can You Control?
This relay module is perfect for a wide range of smart home and DIY automation projects, including:
- Lighting systems and LED strips
- Gate openers and garage door controllers
- AC/DC motor direction control (interlock mode)
- Water pumps and irrigation valves
- Fan speed switching or appliance automation
For guidance on smart home electrical safety and wiring best practices, refer to the U.S. Consumer Product Safety Commission's Electrical Safety resources.
Frequently Asked Questions
Q: What app does the WiFi Smart 4-Way Relay Module use for remote control?
A: This relay module uses the eWeLink app, available for free on both Android and iOS. Once your device is connected to your home WiFi network and added to the app, you can control all four relay channels remotely from anywhere with an internet connection, set schedules, and create automation scenes.
Q: What is the difference between inching, self-locking, and interlock modes?
A: Inching (momentary) mode briefly activates the relay for 1 second before automatically returning to its original state — great for doorbell triggers or momentary pulses. Self-locking mode keeps the relay toggled ON or OFF until you manually change it — ideal for lights and appliances. Interlock mode (4-gang version) ensures that when one relay is active, the others in the group remain off — perfect for controlling the forward/reverse direction of AC/DC motors safely.
Q: Does the relay module work with AC 220V devices?
A: The AC/DC power input (DC 5V–32V or AC 220V) is used solely to power the relay module's PCB — the relays themselves are dry-contact switches with no output voltage. You wire your own AC or DC load circuit through the relay contacts. Always follow your local electrical codes and safety guidelines when wiring high-voltage circuits.
Q: How do I switch between the three working modes?
A: Simply press the work mode setting button on the module manually to cycle through inching, self-locking, and interlock modes. You can also configure mode settings through the eWeLink app for added convenience.