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AprilAire 50 Low Voltage Current Sensing Relay for AprilAire Whole House Evaporative Humidifiers
Product Description The AprilAire Model 50 Low Voltage Current Sensing Relay helps protect the precision components of your AprilAire Whole Home Humidifier, such as the solenoid valve and transformer, from harmful feedback current, and it ensures that the humidifier operates only when the furnace blower is running to distribute humidity throughout your home. The relay allows the humidifier to be wired to a live power source but the circuit will close, allowing the humidifier to turn on, only when appropriate current is going to the furnace blower motor. The relay unit is a compact size of 1 inch x 1.44 inches x 2.75 inches so it's

Price is $43.00
Price: $42.93