ESP8266 ESP-01 12V 4-Channel WiFi Relay Module
Currently unavailable
No store has this product in stock right now. Prices below are the last ones we recorded.
Prices updated: 13 Oct 2026
Price history
Lowest daily price, last 90 days
Not enough price history yet.
About this product
A 4-channel relay board with an ESP8266 ESP-01 Wi-Fi module for switching loads remotely over a wireless network, suited to smart home and remote control projects. The relays use a 12 VDC trigger voltage and the contacts are rated up to 10 A at 250 VAC or 30 VDC. A variant without the ESP8266 module is also listed.
Specifications
- Relay channels
- 4
- Trigger voltage
- 12 VDC
- Switching voltage (AC)
- 250 VAC @ 10A
- Switching voltage (DC)
- 30 VDC @ 10A
- Transmission distance
- 400 m
- Baud rate
- 9600
- Variants
- With ESP8266 / Without ESP8266
Frequently asked questions
How is it controlled from another microcontroller?
The listing gives a baud rate of 9600 but does not describe the command protocol. Check the board's documentation or firmware for the serial commands before integrating it with an Arduino or other controller.
What supply voltage does the relay section need?
The relays are rated for a 12 VDC trigger voltage, so the relay section must be powered at 12 V. The ESP8266 itself runs on 3.3 V logic, so confirm the board's regulation and level handling in its datasheet before connecting external devices.
