Multiparameter Meter pH Range 0 to 14 pH Electric Conductivity Range +/-1000 mV TDS Range 0 to 100 microng/L ORP Range +/-1000 mV Waterproof IP57 Automatic Temperature Compensation Yes Displayed Temperature Range 32 Degrees to 212 Degrees F Salinity Range 0 to 100 ppt Operating Temp Range (F) 32 Degrees to 212 Degrees F Operating Temp Range (C) 0 Degrees to 100 Degrees C Display LCD Auto Power Off Yes Temperature Compensation Range 0 Degrees to 100 Degrees C