This WiFi relay module with an ESP8266 controller enables wireless control through a smartphone app and local network (LAN) via serial port instructions.
It’s designed for handling higher voltages, featuring a 4-cannel relay capable of activating up to 250V AC and 30V DC, allowing for remote control of lights or systems with input from an ESP8266 module.
The module includes LEDs indicating its status, including a red power activation LED that lights up upon receiving a signal. An audible click confirms relay activation. Configuration via UART is required initially, but once programmed and powered, it operates independently, making it great for IoT projects.
- Transmission distance: When the mobile phone is installed on the WiFi module in an open environment, the maximum steady transmission distance is 100M.
- When the WiFi module and mobile phone are carried on the router at the same time, the transmission distance is determined by the router’s signal strength.
- The APP ESP-01 WiFi module uses Smart config technology in the mobile phone to complete the account and password setup, configured username, and password memory function.
- Onboard 5V, 10A//250V AC/10A//30V DC relay with diode discharge protection and quick reaction time that can be pulled continuously for 100 thousand times.
- Real-time operating status indication and board mode option.
- UART debug interface and STM8 SWIM program download interface are reserved.
- DIY projects
- Industrial Automation
- Home applications
Control command for relay(hex format):
- Open relay 1: A0 01 01 A2
- Close relay 1: A0 01 00 A1
- Open relay 2: A0 02 01 A3
- Close relay 2: A0 02 00 A2
- Open relay 3: A0 03 01 A4
- Close relay 3: A0 03 00 A3
- Open relay 4: A0 04 01 A5
- Close relay 4: A0 04 00 A4
- 1 x ESP8266 ESP-01 WiFi 250VAC/30VDC 10A 5VDC 4-Channel Serial Relay Module