HAHRC1NREF

High Accuracy Room Humidity Transmitter, 1%, No LCD, Red LED (n/a with LCD), Comm. Jack (4 pin header), Fan speed switch https://downloads.greystoneenergy.com/Submittals/PS-HAHRCXXX.pdf https://downloads.greystoneenergy.com/Install%20Notes/IN-GE-HAHRCXXX.pdf