McDonnell & Miller Series AF1 Air Flow Switch

For general purpose applications with medium and high velocity requirements. Paddle fits 8″ (203mm) minimum duct size, or 6″ (152mm) if trimmed. Brass, steel and aluminum construction(for specified models). Single pole, double throw snap switch. Sensitivity adjusting screw makes flow adjustment easy. Two electrical knock-outs allow connection from either end. Can be equipped with a time delay relay. Optional features – Stainless steel – Anti-corrosion treatment. Minimum ambient temperature 32°F (0°C). Maximum duct temperature 300°F (149°C). Made in the USA.