1. Onboard mature and stable ESP-12F WIFI module, large capacity 4M BYTE FLASH;2. The I/O port of the WIFI module and the UART program download port are all led out to facilitate secondary development;3. Onboard WIFI module RST reset button;4. ESP-12F supports development tools such as ECLIPSE/ IDE;5. Onboard 2 5V relays, output switch signal, suitable for controlling the working voltage of AC Load within 250V/DC30V;6. Onboard power indicator, 1 programmable LED and relay indicator.Type: Logic ICsModel Number: ESP8266 ESP-12F WIFI Relay ModuleApplication: ComputerOperating Temperature: ESP8266 ESP-12F WIFI Relay ModuleSupply Voltage: 5V/8-80Vcolour:GreenMaterial:plasticsize: 78 x 47mmPackage Contents:1 x Relay Switch BoardOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.