... Measuring range: 0 ~ 200.0 ug/L, 0 ~ 20.00 mg/L 2.Resolution: 0.1 ug/L, 0.01mg/L ... signal output.4. Automatic temperature compensation function: automatic 0 ~ 60°C.5. Communication function: with RS ... 0 ~ 200.0 ug/L, 0 ~ 20.00 mg/L 2.Resolution: 0.1 ug/L, 0.01mg/L, 0.1 ... , medicine, Tap water, etc. High quality and cheap disslved oxygen controller for Water and wastewater treatment plant measuring/ ...