... HVAC, environment, industrial manufacturing, Intelligent Buildin MR1....Temperature & Humidity Sensor Summarize MR1...relative humidity and temperature transmitter with high ... pollution. Temperature & Humidity Sensor (Original Imported from Switzerland) MR1.21T Output:0~10v; Humidity Accuracy:±2% Air duct ... :0~10v; Humidity Accuracy:±5% Air duct type MR1.51W Output:0~10v; Humidity Accuracy:±5% Wall ...