Microprocessor based fault tolerant design. High brightness 4 digit LED display .Wide range,-100 to +400 Deg.C Resolution of 0.1 Deg C over full range . Built in sensor Non Linearity correction to DIN 43760. Single / Two point software Calibration data ratention . Flameproof gas Gr.ll A, B enclosure . Digital Communication Interface on RS485 MOBUS.