A digital timer is a battery-operated small electronic device . The main function of this device is to count down minutes for precise timing. As compared to a traditional clock, these timers are much portable. https://youtu.be/VYeOU_StXTo Features: Wide time range from 1/100 seconds to 9999 hrs. Built-in power supply incorporated in timer enables direct connection of sensors and other components. Draw-out construction allows maintenance without disconnecting the wiring. Power supply freely selectable within a range of 100 to 240 VAC; a DC-operated version is also available. Control outputs of both contact type and transistor type simultaneously available. Seven operating modes (N, F, C, R, K, P, and Q) are available. Specification: Rated supply voltage: H5AN-4D: 100 to 240 VAC (50/60 Hz), 12 to 24, 48, or 100 VDC (permissible ripple: 20% max.) H5AN-4DM: 100 to 240 VAC (50/60 Hz), 12 to 24 VDC (permissible ripple: 20% max.) Power consumption: Approx. 10 VA (at 240 VAC), approx. 5 W (at 24 VDC) Operating voltage range: 85% to 110% of rated supply voltage Resetting system and gate input: Reset by power-OFF: min. power OFF time: 0.5 s * External reset or gate (common to contact and transistor inputs): min. reset input signal width: 0.02 s One-shot output time: 0.1 to 1 s (adjustable) Contact output: SPDT, 3 A at 250 VAC, resistive load (cosφ = 1) Transistor output: Open collector, 100 mA max. at 30 VDC max. Case color: Light gray (Munsell 5Y7/1) Package includes: 1 x Omron Digital Timer H5AN