Precision CD104 Mechanical Timer SwitchPRECISION CD104, 240V, DPST, Raintight NEMA 3. General Purpose 24 Hour Time Switch with Non Corrosive Enclosure. Just use a Precision Timer with a compatible mounting bracket. The timer simply snaps into your new or existing enclosure. There's no need to remove the old box. Takes 30 seconds to install. Voltage 240 Volt Switch Type DPST HP Rating 2 HP Amperage 40 Amps Dimensions 9. 5" H x 5. 375"W x 3. 25" D Construction NEMA 3 Raintight Plastic