TSRC20YEF

Room Temperature Sensor, 20,000 Ohm, NTC Thermistor, ?0.2 C, Yellow LED (n/a if C option selected), External jack for remote system access (4-pin header), Fan speed switch (Auto, O, Low, Mid, High) https://downloads.greystoneenergy.com/Submittals/PS-TSRCXXX.pdf https://downloads.greystoneenergy.com/Install%20Notes/IN-GE-TSRCXXX.pdf