This document describes the features and characteristics of the STEVAL-IHT007V1 extension board. It can directly drive 110/220VAC loads, isolate the high voltage side using opto-transistors, synchronize Triac/AC switch pulses with AC mains using zero voltage switching, and provide full wave on/off control. It is designed for small AC loads up to 500W used in home appliances and home and building automation.