EWeLink WiFi 4-Channel Smart Relay Switch – App & Voice
EWeLink WiFi 4-Channel Smart Relay Switch – App & Voice
EWeLink WiFi 4-Channel Smart Relay Module – App, Voice & RF433 Control
Take full command of your home automation setup with the EWeLink WiFi 4-Channel Smart Relay Switch. This versatile 10A relay module lets you control lights, appliances, garage doors, motors, and access control systems from anywhere in the world — using just your smartphone or your voice. Compatible with a wide range of input voltages (USB 5V, DC/AC 7V–32V, or AC 85–250V), it fits seamlessly into almost any existing electrical setup.
Key Features
- App Remote Control: Use the free EWeLink app (iOS & Android) to turn devices on or off from anywhere with an internet connection.
- Voice Control: Hands-free operation via Amazon Alexa or Google Assistant — just speak and your devices respond.
- RF433MHz Control: Pair with an RF433MHz remote controller (learning code) for convenient local wireless control.
- Smart Linkage: Intelligently integrate and automate with other EWeLink-compatible smart home devices for a fully connected ecosystem.
- Scheduling & Timer Function: Set timers to automatically switch devices on or off at preset times — no more worrying about leaving lights on overnight.
- Three Operating Modes: Choose between Self-Locking, Interlocking, and Jog modes to match your specific application requirements.
- Wide Voltage Compatibility: Supports USB 5V, DC/AC 7V–32V, and AC 85–250V input — adaptable for diverse installations.
- WiFi 2.4GHz + Bluetooth: Stable dual-connectivity ensures fast, reliable communication with your home network.
Specifications
| Input Voltage | USB 5V / DC·AC 7V–32V / AC 85–250V |
| Max Current per Channel | 10A / 2000W |
| Max Total Load | 16A / 3500W (all 4 channels) |
| Wireless | WiFi 2.4GHz (b/g/n) + Bluetooth |
| RF Frequency | RF433MHz (Learning Code) |
| Operating Temperature | -20°C to 70°C |
| Material | Plastic |
| Dimensions | 81 × 76 × 28 mm |
Applications
- Remotely switch lights, lamps, and household appliances on or off.
- Control garage doors and access control systems via pulse signals.
- Manage forward/reverse rotation of DC and AC motors remotely.
- Integrate into smart home scenes and automation routines.
What's in the Box
- 1× 4-Channel WiFi Smart Relay Switch Module
- Optional bundle: 1× RF433MHz Remote Control
Made in Mainland China.
Note: Due to screen and lighting variations, colors may appear slightly different from product images. Please allow 1–10 mm variance due to manual measurement.
For more information on safe electrical practices and smart home device standards, visit the U.S. Consumer Product Safety Commission (CPSC).
Frequently Asked Questions
Q: What input voltages does the EWeLink 4-channel smart relay module support?
A: The relay module supports three input voltage options: USB 5V, DC/AC 7V–32V, and AC 85–250V. This wide voltage range makes it compatible with a broad variety of electrical installations and automation projects.
Q: Can I control this WiFi relay switch without an internet connection?
A: Yes — in addition to app-based remote control over the internet, the module supports local RF433MHz control using a compatible learning-code remote controller, allowing operation even when your internet connection is unavailable.
Q: Is the EWeLink relay switch compatible with Alexa and Google Assistant?
A: Absolutely. The module integrates with Amazon Alexa and Google Assistant, enabling full hands-free voice control of connected devices once configured through the EWeLink app.
Q: What are the three operating modes and when should I use each?
A: The three modes are: Self-Locking (the relay stays in its last state after a command — ideal for lights and appliances), Interlocking (only one channel can be active at a time — useful for motor direction control), and Jog (the relay closes momentarily then releases — great for garage doors and access control triggers).