Sonoff 4CH Pro R2

GPIO Pinout

Pin	Function
GPIO0	Push Button 1 (HIGH = off, LOW = on)
GPIO9	Push Button 2 (HIGH = off, LOW = on)
GPIO10	Push Button 3 (HIGH = off, LOW = on)
GPIO14	Push Button 4 (HIGH = off, LOW = on)
GPIO12	Relay 1 and its status LED
GPIO5	Relay 2 and its status LED
GPIO4	Relay 3 and its status LED
GPIO15	Relay 4 and its status LED
GPIO13	Blue LED (HIGH = off, LOW = on)

Basic Configuration

# Basic Config
esphome:
  name: sonoff_4chpror2

esp8266:
  board: esp01_1m

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

logger:
api:
ota:
  - platform: esphome

# Device Specific Config
binary_sensor:
  - platform: gpio
    name: "Sonoff 4CH Pro Button 1"
    pin:
      number: GPIO0
      mode: INPUT_PULLUP
      inverted: True
    on_press:
      - switch.toggle: "relay_1"
  - platform: gpio
    name: "Sonoff 4CH Pro Button 2"
    pin:
      number: GPIO9
      mode: INPUT_PULLUP
      inverted: True
    on_press:
      - switch.toggle: "relay_2"
  - platform: gpio
    name: "Sonoff 4CH Pro Button 3"
    pin:
      number: GPIO10
      mode: INPUT_PULLUP
      inverted: True
    on_press:
      - switch.toggle: "relay_3"
  - platform: gpio
    name: "Sonoff 4CH Pro Button 4"
    pin:
      number: GPIO14
      mode: INPUT_PULLUP
      inverted: True
    on_press:
      - switch.toggle: "relay_4"

  - platform: status
    name: "Sonoff 4CH Pro Status"

switch:
  - platform: gpio
    name: "Relay 1"
    pin: GPIO12
    id: "relay_1"
  - platform: gpio
    name: "Relay 2"
    pin: GPIO5
    id: "relay_2"
  - platform: gpio
    name: "Relay 3"
    pin: GPIO4
    id: "relay_3"
  - platform: gpio
    name: "Relay 4"
    pin: GPIO15
    id: "relay_4"

LED Configuration

Use one of the following three configurations to adjust the led to your needs. Note: Using the Status LED on the 4CH Pro may cause relay 4 to activate on power up.

Status LED (see https://esphome.io/components/status_led.html)

status_led:
  pin:
    number: GPIO13
    inverted: True

Always-on led (plugged in == led on)

output:
  - platform: esp8266_pwm
    id: blue_led
    pin: GPIO13
    inverted: True

light:
  - platform: monochromatic
    name: "Blue LED"
    output: blue_led
    restore_mode: ALWAYS_ON
    internal: true

Normal light, toggleable via Home Assistant

output:
  - platform: esp8266_pwm
    id: blue_led
    pin: GPIO13
    inverted: True

light:
  - platform: monochromatic
    name: "Blue LED"
    output: blue_led