Menu driven, sealed, backlit, pH/mV monitor/transmitter with an isolated and reversible 4 ~ 20 mA current output for pH and mV. Tinned lead connectors. 1/8 DIN, RoHS compliant, backlit, panel mount pH and temperature transmitter with isolated and reversible 4 ~ 20 mA current output for pH or mV. Extremely price competitive. Easy to install 1/8 DIN plastic casing. Clear LCD displays pH, mV or temperature with backlight. Universal power supply input from 100 ~ 240 VAC. Automatic buffer recognition of US and NIST buffer sets. Calibrated data is stored in memory and ready to for use on power up. Automatic or manual temperature compensation. Displays absolute and relative ORP. Isolated and reversible 4-20mA current output for pH or mV allows it to be used as a proportional output. RoHs, CE compliant. Specifications pH Range: -2. 00 to 16. 00 pH pH Resolution: 0. 01 pH pH Accuracy: 0. 1% F. S. 1 digits ORP Range: -1999 to 1999 mV ORP Resolution: 1 mV ORP Accuracy: 0. 1% F. S. 1 digits Temperature Range: -10. 0 to 120. 0 °C Temperature Resolution: 0. 1 °C Temperature Accuracy: 0. 3 °C pH buffer recognition: US (4. 01, 7. 00, 10. 01) or NIST (4. 00, 6. 86, 9. 18) user selectable pH Electrode Offset Recognition: 100 mV at 7. 00 pH /-91. 7 mV to 108. 3 mV at 6. 86 pH pH Electrode Slope Recognition: 30% at 4. 00 , 4. 01, 9. 18 or 10. 01 pH Temp Compensaton: Auto /manual -10. 0 to 120. 0 °C (Thermistor , 10K ohm /PT-1000) Input impedance: >10 13 ohms Input Select: User selectable pH or ORP Current Output Range: 4 to 20 mA (isolated) Scale: Liner Maximum Load: 500 ohm Isolation Voltage: 500 VDC Display: LCD with backlighting Power: 100 to 240 VAC at 50/60 Hz Ambient Temperature Range: From 0 to 50 °C Case: 1/8 DIN case , 90 mm depth