Features50/60 Hz frequencyWith neutral for new construction2 hr timing for title 24 and IECC (default)10 GB 4 hr timing for ASHRAE 90.1 (with quick DIP switch adjustment)5 min to 24 hr, 5 min steps from 5 min to 1 hr, 0 min steps from 1 to 4 hr, 30 min steps from 4 to 12 hr, 1 hr steps from 12 to 24 hr programmableLimits user adjustment to a maximum equal to the preset time scroll lockWallplate locks access to DIP switch adjustments tamper resistantStart or stop countdown from timer or remote switch manual operation3-way compatible with existing switch, multi-way requires momentary switches at the additional locations, maximum distance 100 ft 3-way and multi-wayWhite color