This worked on my 3-wire bath-exhaust fan application (house has no ground in the box). The unit requires a neutral wire in the box. I connected the neutrals white-to-white, unit's black wire to the black LINE wire, and unit's BLUE wire to the fan's load wire. I programmed four time periods to run the fan at desired intervals. Honeywell knows the controls business.NOTE: Tap the big rectangle on the front to run the fan (or lights) manually. Tap again for OFF.WARNING: Disconnect power at the breaker before connecting any lead to this unit. This is for safety, and to avoid damage to the unit.
Rating:
[5 of 5 Stars!]