Dwyer RHPLC-3N11 Humidity/Temperature Transmitter offers a drift of <0.25% RH/year and a temperature range of -40 to 140°F (-40 to 60°C). It requires power of 10 to 35 VDC for 4 to 20 mA or 0 to 5 VDC output, with various options for voltage output. The response time is 8 seconds. The sensor used is a capacitive polymer, and the unit can measure humidity from 0-100% RH. The housing is made of polycarbonate, and electrical connections are made via a screw terminal block. The accuracy of the RTD temp sensor is ±0.3°C @ 0°C (±0.54°F @ 77°F), while the passive thermistor temp sensor accuracy is ±0.36ºF @ 77°F (±0.2°C @ 25°C). The accuracy of the current/volt temp output is ±0.9°F @ 77°F (±0.5°C @ 25°C). The RH accuracy is ±2% 10 to 90% RH @ 25°C for 2% accuracy units and ±3% 20 to 80% RH @ 25°C for 3% accuracy units.