HAT triac 2 relays with MCU, UART/I2C for Raspberry Pi

Features:

Relay advantages: High efficiency, no mechanical noise and wear, fast response, adjustable output
MCU controller STM32F0: directly supports command control, easy to develop
RC damping circuit, protects triac from power fluctuations
Output power up to 4400 W, under ideal heat dissipation conditions
Optocoupler isolation, preventing interference from high voltage circuit
Indicator to easily check triac status
Reserved UART and I2C interface, to work with other host control boards
Data rate: up to 921.6 kbps for UART, up to 1024 kbps for I2C
Comes with development resources and manual (examples in C and Python)