The HP510A601 CYCL-FLEX® reset timers are electric reset time controllers manufactured by Eagle Signal, a Danaher Specialty Products company. The HP5 series timers are high quality, synchronous motor driven reset timers housed in the standard CYCL-FLEX® plug-in housing. The HP510A601 timer has a time range of 30 hours, has a minimum setting of 1 hour and has a progress pointer to let you know how far along it is. The calibrated dials are highly visible and are 7.85 inches (19.939 cm) in circumference providing easily read and well spaced calibrations. The progress pointer is red and displays the remaining time interval. On the HP510A601, Eagle Signal included a pilot light that points out when the timing motor is energized. This timer comes with an option that reverses the clutch action and will not reset on power failure. There is an additional option with the standard "power on" clutch operation. For this option, please see HP510A6. The CYCL-FLEX® housings have 15 terminal ABS (UL rated 94V-0) molded housing with high impact resistance and will not support combustion.