Intermatic FM/1STUZ-24U 24-Hour SPDT Timer 24V

The Intermatic FM/1STUZ-24U SPDT Timer 24V is an electromechanical timing control that schedules electrical switching according to programmed time intervals within HVAC systems. Installed inside the equipment control panel, it operates a motor-driven timing system that changes single-pole double-throw contacts at preset times during a 24-hour cycle. The switching sequence communicates with control boards, relays, contactors, and connected electrical circuits, allowing automated equipment operation based on programmed schedules. Its operations support time-based equipment control by switching connected circuits according to predetermined operating intervals throughout each cycle.