ESP8266 Wireless WIFI 4 Channel Relay ule Wifi Development Board

1. Onboard mature and stable ESP-12F WIFI ule, large capacity 4M BYTE FLASH 2. The I/O port of the WIFI ule and the UART program download port are all led out to facilitate secondary development 3. Onboard AC-DC switching power supply ule, power supply e supports AC90-250V/DC7-30V/5v 4. Onboard WIFI ule RST reset button. ESP-12F supports the use of development tools such as ECLIPSE/ARDUINO IDE, and provides for ARDUINO Reference program in the development environment 5. Onboard 4 5V relays, output switch signal, suitable for controlling the working voltage of AC Load within 250V/DC 30V. On-board power indicator, 1 programmable LED and relay indicator. Burning port: The GND, RX, TX, and 5V of ESP8266 are respectively connected to the GND, TX, RX, of the external TTL serial port ule 5V, IO0 needs to be connected to GND when downloading, and then disconnect the connection between IO0 and GND after downloading; Relay output: NC: Normally closed, the relay is short-connected with COM before it is closed, and it is suspended after being closed; COM: public end; NO: Normally open end, the relay is suspended before being closed, and shorted to COM after being closed. colour:Green Material:PCB size:87 x 93mm Package Contents: 1 x ESP8266 4 Channel Relay uleOnly 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 allowed error is +/- 1-3cm.