Device Type: relay
Electrical Standard: global
Board: esp8266

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: (no affiliation, no guarantee it will continue to exist).

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A more detailed manual:

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)
J7 PinComment
3V3For programming, inject 3.3V power here
3V3For programming, inject 3.3V power here
GPIO53.3V level, Blue LED (inverted)
GPIO43.3V level
GPIO03.3V level
GPIO23.3V level
GPIO153.3V level
J6 PinCommentJ5 Pin
ADC0V-1V only
ENPulled up
GPIO16Use a jumper to RY1 to enable Relay 1 (Warning, see note above about power-on state)RY1
GPIO15Optionally, use a longer jumper to RY1 to enable Relay 1RY1
GPIO14Use a jumper to RY2 to enable Relay 2RY2
GPIO12Use a jumper to RY3 to enable Relay 3RY3
GPIO13Use a jumper to RY4 to enable Relay 4RY4

Basic Config

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)
number: GPIO5
inverted: True
# Four relay outputs, exposed as switches in Home Assistant
- 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
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