HAHRC1N18YEF

High Accuracy Room Humidity Transmitter, 1%, No LCD, 1000 ohm platinum, 2, wire, IEC 751, 385 alpha, thin film, class A, Yellow 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