This is a Commercial Spring Wound Countdown Timer with a 30 minute maximum, SPST, 125-277 volts, in silver. The FF Series Commercial Countdown Timers are designed to replace any standard wall switch (single or multi-gang) and do not require energy to operate. These energy efficient switches automatically limit the ON times for fans, lighting, motors, heaters, and other energy consuming loads. A commercial brushed metal look plate (plastic construction) meets NEC requirements.
Measurements: 4.125 x 1.75 x 1.25 inches.