Intermatic T101P3 Mechanical Timer 110 VoltIntermatic T101P3 Mechanical Timer The T101P3 Intermatic timer has a heavy duty mechanical timer and is designed for commercial and residential applications including pool and spa applications. For Indoor Outdoor use 110 Volt and includes a Nema 3R Plastic enclosure. When in comes to controlled timers, Intermatic leads the way. Intermatic's heavy duty Mechanical Time Switches are designed for industrial, commercial and residential applications and