ESP-12F_Relay_X4

esp8266 global Comes with ESPHome relay

Product description

This is a 4-relay board with an ESP-12F. Each relay has COM+NO+NC exposed. Product descriptions don’t seem to specify maximum load. The board can be powered either via 90-250VAC or via 7-30VDC, or via 5VDC (separate connectors). I bought it from: https://www.aliexpress.com/item/1005001906928377.html (no affiliation, no guarantee it will continue to exist). Search for more: https://www.aliexpress.com/wholesale?SearchText=esp-12f+ac90-250v+relay+4+channel A more detailed manual: https://templates.blakadder.com/assets/ESP12F_Relay_X4.pdf The board uses GPIO16 for RXD so it will always be briefly be powered on at boot, unforetunately this is also the pin the board is setup to use for relay1. If this brief power-on isn’t an issue, you can continue to use GPIO16 or you can run a longer jumper over to a pin such as GPIO15.

GPIO Pinout

This board has headers for every GPIO pin on its ESP-12F.

J8 PinComment
5VDo not use 5V for programming
TX3.3V level!
RX3.3V level!
GPIO03.3V level! (pulled up, connect to GND for programming)
GND
GND
J7 PinComment
———————————————
3V3For programming, inject 3.3V power here
3V3For programming, inject 3.3V power here
5V
5V
GND
GND
GPIO53.3V level, Blue LED (inverted)
GPIO43.3V level
GPIO03.3V level
GPIO23.3V level
GPIO153.3V level
GND
J6 PinComment
——————————————-
ADC0V-1V only
ENPulled up
GPIO16Use a jumper to RY1 to enable Relay 1 (Warning, see note above about power-on state)
GPIO15Optionally, use a longer jumper to RY1 to enable Relay 1
GPIO14Use a jumper to RY2 to enable Relay 2
GPIO12Use a jumper to RY3 to enable Relay 3
GPIO13Use a jumper to RY4 to enable Relay 4

Basic Config

esphome:
  name: relayboard
  platform: ESP8266
  board: esp12e
# Use the blue LED in the device as a status LED, which will blink if there are warnings (slow) or errors (fast)
status_led:
  pin:
    number: GPIO5
    inverted: True
# Four relay outputs, exposed as switches in Home Assistant
switch:
  - platform: gpio
    pin: GPIO16 #or GPIO15 to avoid brief power-on at boot
    name: Relay1
    id: relay1
  - platform: gpio
    pin: GPIO14
    name: Relay2
    id: relay2
  - platform: gpio
    pin: GPIO12
    name: Relay3
    id: relay3
  - platform: gpio
    pin: GPIO13
    name: Relay4
    id: relay4