... -14 PH, temperature: 0 ~60°C2. Resolution: 0.001 mg/L, 0.01 mg/L, 0.01 ,0.1°C, pH3. Precision: better than ... plus or minus 1% or +/- 0.01 mg/L, plus or minus 1% or +/- 0.01 mg/L, +/- 0.02 pH, +/- 0.5°C4 ... °C, relative humidity 90% or less9. The output load: load<500 Ω(0-10mA), load<750Ω(4-20mA)10.Working voltage: 220 ...