The H117-F by Control Resources is a thyristor phase angle fired controller used as a motor speed controller. It is used to accurately control the speed of single-phase, split-phase and three-phase induction motors with adjustable speed features. It features on-board analog current monitoring, a wide operating temperature range, and flexible communications options. This controller is ideal for a variety of applications such as pumps, blowers, fans, exhaust ventilators and conveyor systems.