We offer discount for large quantity. We invite you to ! ESP8266 WIFI 8 relay module ESP-12F development onboard power supply 5V/7-28V WIFI wireless module1. Onboard mature and stable ESP-12F wifi module, 4m bytes large capacity flash memory;2. Power supply mode supports DC7-28V/5v;3. The first button reset the wifi module on the board;4. ESP-12F supports the use of development tools such as eclipse/for arduino ide, and provides reference programs in the Arduino development environment;5. There are 8 5v relays on the board, which are used to switch the output signals and are suitable for controlling loads whose operating voltage is in the AC range. On-board power indicator and relay indicator. Material: PlasticColor: Green Package Contents: 1 x WIFI 8 Relay ModuleOnly 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 a little different from the real thing. The measurement error is +/- 1-3cm. About UsWe provide good product with best price, we support wholesale order/