The Airetrak Ventilation Controls from Tamarack Technologies are programmable solid state speed controls that are ideal for use with variable speed exhaust fans in which specific ventilation rates are required. Two models are available. The Constant Duty model (ATRAKCD) will run a fan continuously at low speed and offer a push button on/off boost option. The Programmable model (ATRAK1A) will automatically control the fan speed during a timed cycle, while providing easy selection to a full-speed 20 minute boost cycle.
These fan controls fit into a single gang electrical box, utilize standard toggle switch plate covers, and can be programmed in under two minutes. All controls except for the boost switch remain hidden under the switch plate cover. The air flow rate is adjustable from 40 percent to 100 percent of fan capacity. The model with the built-in timer can be programmed to operate the ventilation equipment in from 5 to 60 minutes (in 5 minute increments) during a 12 or 24 hour cycle. The lithium backup battery will remember the control settings for up to 400 hours in the event of a power outage. (Note that these timers should not be used in conjunction with stand-alone photovoltaic power systems.)
