The W-2P and W-2F timers are ideal for use when a time delay in energizing a circuit is required. Prevent from rapid re-starting after suden power loss. They are available with a fixed, external or onboard adjustable time delay. The W-2P and W-2F are a delay on make timer when the power is applied to the W-2P the adjustable delay period starts (W-2F fix time period). The load is enegized at the end of the delay period and remains energized until input voltage is removed (due to thermostat, etc). When power is removed from the W-2P and W-2F the load is de-energized.