... Measuring range: 0 ~ 200.0 ug/L, 0 ~ 20.00 mg/L 2.Resolution: 0.1 ug/L, 0.01mg/L ... output.4. Automatic temperature compensation function: automatic 0 ~ 60°C.5. Communication function: with RS - 485 communication interface ... 0 ~ 200.0 ug/L, 0 ~ 20.00 mg/L 2.Resolution: 0.1 ug/L, 0.01mg/L, 0.1 ... load 10A 220VAC8.Working conditions: environmental temperature is 0 ~ 60°C, relative humidity 90% or less9 ...