The LC-Relay-ESP12-1R-D8 single-channel relay development board is based on the I/O port of the ESP-12F WiFi module, which is fully extended. It supports DC8-80V / USB 5V and other power supply methods. It provides reference code for the development environment, suitable for ESP8266 secondary development learning, wireless control of smart devices, and other occasions. Built-in ESP-12F and stable WiFi module, high capacity 4M Flash. Reserves GPIO for ESP-12F. Reserves UART firmware update interface. Built-in WiFi module reset button. 1 channel 5V built-in relay. Color: Blue Material: PCB Model: LC-Relay-ESP12-1R-D8 Working Voltage: DC8-80V / USB5V WIFI IC: ESP8266 Communication Protocol: UART Load Voltage: AC 250V or DC 30V (Max) Load Current: 10A (Max) Working Temperature: -25℃ ~ 85℃ Working Humidity: 5%~95%RH Size: 59 x 48 x 19mm Package: 1 pc WIFI Relay Switch Module 1 pc 2 x 7-pin 2.54mm male header 1 pc 2 x 6-pin 2.54mm male header 1 pc 5-pin 2.54mm male header 1 pc 2.54mm jumper cap Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. The allowed measurement error is +/- 1-3 cm.