The Aldes 611226 Speed Control operates the ventilation unit in one of 4 modes:

• Intermittent: low-speed 20-min exchange followed by 40-min off or recirculation
• Low-speed exterior air exchange
• High-speed exterior air exchange
• Off/standby (when the indicator lights are off)

These easy-to-use controls allow you to loop through various functions at the push of a button. Each control fits inside any 2 x 4 service box and comes with retaining screws and a white wall plate.

Wiring: Colour-coded, 4-conductor wire to the H/ERV’s terminal block.