DO & temperature controller with 2 sets of On/Off relays, stored calibration data, backlit LCD display for DO and temperature. DO & temperature controller with 2 sets of On/Off relays, stored calibration data, backlit LCD display for DO and temperature, universal power supply 100 to 240 VAC and packaged in an easy to install plastic panel mount water resistant 1/8 DIN IP65 case. Uses Hamilton Company Oxysens and Easyferm DO electrodes. Easy to install 1/8 DIN plastic casing Clear LCD displays dissolved oxygen or temperature with backlight Calibration data is stored in memory and is ready for use on power up Universal power supply input from 100 ~ 240 VAC Automatic or manual temperature compensation Two sets of programmable on/off relays for DO CE and RoHS complain Specifications DO Range: 0. 00 to 40. 00 mg/L DO Resolution: 0. 01 mg/L DO Accuracy: 0. 2 % F. S. DO% saturation Range: 0. 0 to 400. 0 % DO% saturation Resolution: 0. 1 % DO% saturation Accuracy: 0. 2 % F. S. Temperature Range: -10. 0 to 80. 0 °C automatic or manual Temperature Resolution: 0. 1 °C Temperature Accuracy: 0. 3 °C Barometric Pressure Compensation Range: 600 to 4000 mbar manual Salinity Compensation Range: 0. 0 to 49. 9 ppt manual Type of Electrode: Polarographic Relay Output: Two ON/Off controls. 5 A at 115 VAC or 2. 5 A at 220 VAC Power: 100 ~ 240 VAC , 50/60 Hz