The Model DPT-2011 Dew Point Transmitter is a single-stage chilled mirror dew point sensor with digital display. DSP technology provides auto-correction for mirror contamination and LED "mirror clean" indication. Accuracy = �0.26oC dew point over �50oC; max depression 45oC. Analog 4-20mA analog output and digital RS-232 port with graphical PC/Mac real time display software. Includes mounting bracket and serial cable. Pressurized to 30 PSI. NIST traceable. Requires 11-14VDC.