2/4/8 Channel ESP8266 Wireless WiFi Relay Module ESP-12F Development Board E-WeLink APP Remote Control Switch AC/DC Power

relay2/4/8 Channel ESP8266 Wireless WIFI Relay Module ESP-12F Development Board E-WeLink APP Remote Control Relay Switch AC/DC PowerFeatures:1. Onboard WIFI module RST reset button.On-board power indicator, 1 programmable LED and relay indicator.2. Onboard mature and stable ESP-12F WIFI module, large capacity 4M BYTE FLASH.3. Onboard AC-DC switching power supply module, power supply mode supports AC/DC input.4. The I/O port of the WIFI module and the UART program download port are all led out to facilitate secondary development.5. ESP-12F supports the use of development tools such as ECLIPSE/ IDE, and provides Reference program in the development environment.Writing mouth:The GND, RX, TX, and 5V of ESP8266 are connected to the GND, TX, RX, and 5V of the external TTL serial port module respectively. The IO0 should be connected to the GND when the download is complete. Disconnect the IO0 and GND after the download is complete.Relay output:NC: normally closed end, short connect with COM before relay closing, suspended after closing;COM: public terminal;NO: normal start, the relay is suspended before closing, and short connected with COM after closing.Note:1. Due to the light and screen difference, the item's color may be slightly different from the pictures.2. Please allow 1-3cm differences due to manual measurement.2 Channel Relay ModulePower supply: DC5V/7-80VDimension: 78*47mm4 Channel Relay ModulePower supply: AC90-250V/DC7-30V/5VDimension: 93*87mm8 Channel Relay ModulePower supply: DC5V/7-28VDimension: 149*80mm

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