NSi Industries TORK C515M In-Wall Spring Wound 15-Minute Commercial Grade Mechanical Interval Timer Switch - for Fans, HVAC, Whirlpools, Motors and Pumps - Automatic Off  - Metal Single-Gang Wall Plate Included SIMPLE TO USE: With no electricity needed to operate, the timer allows you to manually turn on and automatically turn off whirlpools, HVAC, fans, pumps or other appliances by simply twisting the knob to the desired time. CONVENIENT SCHEDULING AND FEATURES: The timer has a 15-minute time cycle, allowing the user to select a desired time on from 1 to 15 minutes. The timer will automatically turn off. The timer includes a metal wall plate with screw mounting. RATINGS: 120-Volt, 20-Amp, 250/277-Volt, 10 Amp, Resistive and Inductive, 125-Volt, 7A Tungsten, 125-Volt, 1 HP Motor and 250-Volt, 2 HP Motor