Dwyer WHT-333 is a weather-resistant humidity/temperature transmitter with a drift of less than 1% RH/year. It has an accuracy of ±0.9°F @ 72°F for 4-20 mA output and ±0.36°F @ 77°F for passive output. The transmitter operates on various power requirements and has a response time of 15 s. It is designed to meet NEMA 3S (IP54) enclosure rating and has a capacitance polymer sensor. With a humidity range of 0 to 100% RH, the transmitter offers accurate measurements and reliable performance. It has a removable screw terminal block for convenient electrical connections and delivers output signals based on the model. The ABS enclosure ensures durability, and with a storage temperature range of -40 to 176°F, the transmitter can withstand harsh environments. It offers a repeatability of ±0.1% and hysteresis of ±1%. The temperature sensor is available in either a 4-20 mA output or passive output version. The RH sensor accuracy is ±2% for 20 to 80% RH and ±3% for 10 to 20% and 80 to 90% RH.