This is about a Din Rail module (2 of them) providing 3 Relays.
Module is compatible with mysensor and using nrf52832
In production since nearly one year at home so it's reliable
Power supply is integrated in the module itself
The setup is split in two boards. The top one is holding the NRF and leds, the bottom one is holding the power supply and the 3 relays.
Please be extremely carreful as this is powered up by 230v AC and this is exposed within the module !