Relay Module WiFi 4 Channel ESP8266 Development Board Voltage Monitoring Relay Industrial Parts for Wireless Control DC7

Features 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 lead out to facilitate secondary development 3 Onboard AC DC switching power supply module the power supply mode supports AC90 250V DC7 30V 5v 4 Onboard WIFI module RST reset button 5 ESP 12F supports the use of development tools such as ECLIPSE ARDUIN0 IDE and provides reference programs for thedevelopment environment 6 Onboard 4 channel 5V relays output switching signals suitable for controlling loads with operating voltages within AC250V Dc30V 7 Onboard power indicator 1 programmable LED and relay indicator Interface Description Programming port GND RX TX and 5V of ESP8266 are connected to GND TX RX and 5V of the external TTL serial port module respectively IO0 needs to be connected to GND when downloading After the download is completed disconnect the connection between IO0 and GND Relay output NC Normally closed end short circuited to COM before the relay closes and left floating after closing COM public terminal NO Normally open the relay is left floating before closing and short circuited to COM after closing GPIO pinout port introductionARDUIN0 development environment setup ESP8266 supports development tools such as ECLIPSE ARDUINOIDE Using it is relatively simple The following is how to set up the development environment 1 Install ARDUIN0 IDE 1 8 9 or the latest version 2 O