Martin Jerry
From Wildsong
I have some switches (S-01) and some dimmers (SD-01)
S-01 Switch
On the ESPhome page for the device, https://devices.esphome.io/devices/MJ-S01, they claim you can reprogram these with Tuya-convert but I don't believe it. According to https://devices.esphome.io/guides/tuya-convert you can load a generic ESPhome image and then use OTA thereafter.
I have managed to reprogram 2 of these but can't remember how I did it right now.
It has a button and a relay and two LEDs, one red and one blue.
SD-01 Dimmer
On ESPhome page: https://devices.esphome.io/devices/MJ-SJ01