Accept input RTD, Thermocouple, Voltage , Current Process – Temperature , Pressure, Humidity ,Level Flow,Co2, Air velocity, Diff pressure etc â€Â¦ Optional for with and with out Display Also available single pen and 23612 point ( Input) Operating Voltage 110 VAC or 230 VAC Chart speed 20 mm hour and up to 200 mm hour optional Chart Size 120mm or 180 mm , pen and multi color ribbon External power supply for transmitter optional Cutout size : 208 X266 mm