Intermatic FF15MC 15-Minute Commercial Spring-Wound Countdown Timer, SPST, 125-277V (Silver) Intermatic FF15MC is a commercial-grade spring-wound countdown timer designed to replace a standard wall switch and automatically shut loads off after a selected time period (up to 15 minutes). It is ideal for controlling fans, lights, and other energy-consuming loads where automatic shutoff is preferred. Key Features Part Number: FF15MC Brand: Intermatic Product Type: Spring-wound countdown wall timer Maximum Countdown Time: 15 minutes Switch Type: SPST (Single Pole Single Throw) Voltage Range: 125-277 VAC, 50/60 Hz No hold mode (automatically returns OFF at end of cycle) No electricity required to operate timer mechanism Commercial brushed-metal-look finish (silver) Includes wall plate Compatible with incandescent, fluorescent, CFL, and LED loads Common applications: ventilation fans, lighting, motor control, outdoor lighting control Applications Ideal for bathrooms, utility rooms, storage areas, fan circuits, and lighting applications where you want a simple mechanical timer that limits ON time and helps reduce energy waste. Usage Notes Verify voltage and load type before ordering and installation. Confirm your application only requires an SPST timer switch. This is a spring-wound countdown timer (not a programmable digital timer). Install in accordance with manufacturer instructions and local electrical codes. Professional installation by a qualified electrician is recommended. Related Products Intermatic Countdown Timers Intermatic Wall Timer Switches Intermatic Spring-Wound Timers Intermatic Timer Switches Pool Equipment Timer Controls Maintenance Tips Check knob operation periodically to ensure smooth wind-down and shutoff. Inspect the wall plate and mounting screws for secure fit. If switching becomes inconsistent, inspect wiring connections (power off first). Replace the timer if the spring mechanism no longer counts down reliably.