ACI A/RH2-20K-O-3.25"-EH ACI MSRP: Now: $0.00 Was: Relative Humidity, RH Outputs: 0-5, 0-10 VDC & 4-20mA (Default), Outside Air (3.25" SS), ± 2% Accuracy, 20,000 Ohm Thermistor, Euro Enclosure A/RH2-20K-O-3.25"-EH