the meter achieves an IP54 rating

whereas the AG13A series is designed for 24VAC systems

Universal Compatibility: Supports remote room sensing

it is not interchangeable with 2-wire models like the F19-0104

Precision Metering: Size 00 bore provides exact mass flow rates required for low-capacity refrigeration and AC applications

Dwyer Instruments AAFS Switch Refrigerant the meter achieves an IP54The Dwyer Instruments AAFS Adjustable Air Flow Paddle Switch is a heavy duty sensing solution engineered to monitor and verify air flow velocity in HVAC and industrial ductwork. Designed to handle air and compatible gases, this unit features a field adjustable SPDT switch, allowing for precise setpoint selection between 200 to 1800 FPM. As the direct replacement for F40AA 2, it offers a drop in upgrade for legacy systems requiring reliable proof of