4CH 1.5A Trailing Edge Dimming Actuator, (Buspro)
https://b2b.hdl-automation.cz/en/support/products/data-sheets/buspro/dimmers/hdl-mdt0203(04015-06015)-532(533)
https://b2b.hdl-automation.cz/en/support/products/data-sheets/buspro/dimmers/hdl-mdt0203(04015-06015)-532(533)