Dwyer WHT-310 is a weather-resistant humidity/temperature transmitter with a drift of <1% RH/year. It has an accuracy of ±0.9°F @ 72°F and ±0.36°F @ 77°F for temperature measurement. The transmitter requires 10-35 VDC power and has a response time of 15 s. It is enclosed in an ABS casing with an IP54 rating. The sensor uses a capacitance polymer for measurement and has a humidity range of 0-100% RH. The output signal options include 4-20 mA, 0-10 V, and 0-5 V. Storage temperature limits are -40 to 176°F. Accuracy for humidity is ±2% for 20-80% RH and ±3% for 10-20% and 80-90% RH.