WiFi Online PH TDS Controller Professional 3 in 1 PH/TDS/TEMP Water Quality Detector PH Controller Water Quality Tester for Aquarium Hydroponics Specifications: Material: ABS OS Requirement: Compatible with for iOS and for Android system Range: pH: 0.00~14.00pH             TDS: 0~19990ppm, 0~199.0ppt             Temperature: 0~50℃ (32~122℉) Resolution: pH: 0.01pH                    TDS: 1ppm(<1000ppm), 10ppm(>1000ppm), 0.1ppt                    Temperature: 0.1℃(0.2℉) Accuracy: pH: ±0.1pH                 TDS: ±2%F.S                 Temperature: ±1.0℃ Alarm Setting Range: pH: 0.00~14.00pH                                  TDS: 0~20000ppm Temperature Compensation: 0~50℃ (32~122℉) Operating Temperature: 0~50℃ (32~122℉) Length of Sensor Line: 2m / 6.56ft pH/ORP/TEMP Controller Size: 160 * 95 * 40mm / 6.30 * 3.74 * 1.57in (Excluding Electrode Connector) Control Socket Size: 130 * 65 * 53mm / 5.12 * 2.56 * 2.09in (Including Fuses) Item Weight: 872g / 1.92oz Package Weight: 1077g / 2.38lb