This document is about UAA2016 product, UAA2016 is a zero voltage switch power controller, which can drive triacs and use zero voltage technique to realize RFI-free power regulation, its main application is the precision regulation of electric heating systems, such as panel heaters or irons. A built-in digital sawtooth waveform permits proportional temperature regulation action over a ±1°C band around the set point. For energy savings there is a programmable temperature reduction function, and for security a sensor failsafe inhibits output pulses when the sensor connection is broken. Preset temperature (i.e. defrost) application is also possible. In applications where high hysteresis is needed, its value can be adjusted up to 5°C around the set point. All these features are implemented with a very low external component count.