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Martin Jerry MJ-ST02

Martin Jerry MJ-ST02

Device Type: switch
Electrical Standard: us
Board: esp8266

Amazon Link

Martin Jerry MJ-ST02 3-Way Switch

I received mine when ordering Tasmota pre-flashed Martin Jerry 3-way switches from Amazon, even though the listing shows them as MJ-ST01 switches.

Notes

This product uses Tuya MCU to control the relay. It requires a baud rate of 9600.

GPIO Pinout

PinFunction
GPIO1Tuya Tx
GPIO3Tuya Rx

Tuya Datapoints

DatapointFunction
1switch
7int value

Basic Configuration

esphome:
  name: mj-st02


esp8266:
  board: esp01_1m


# Enable HA API
api:
  encryption:
    key: !secret api_key


# Enable OTAs
ota:
  password: !secret api_password


# Sync RTC with HA
time:
  - platform: homeassistant
    timezone: America/Chicago


# Wi-Fi Setup
wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password


  # Enable fallback hotspot (captive portal) in case Wi-Fi connection fails
  ap:
    ssid: mj-st02 AP
    password: !secret ap_password


captive_portal:


logger:
  baud_rate: 0


uart:
  rx_pin: GPIO3
  tx_pin: GPIO1
  baud_rate: 9600


tuya:


light:
  - platform: tuya
    name: mj-st02 Switch
    switch_datapoint: 1
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