• Smart Water Quality Tester: You can view the current data, historical data, and abnormally high and low data alarms on the phone APP • APP Real-time Monitoring: It records the data for a long time, convenient for you to compare and analyze and formulate solutions • Easy Operation: Immersed the electrode of the tester in water and waited for a few seconds to get the data on the LCD screen • Fuse Protection: When the current is abnormal, it reaches a certain height, and it will cut off the whole circuit • Application: Suitable for swimming pools, spas, fish ponds, aquarium, seawater, marine/saltwater fish tank, and so on Specifications: • Material: ABS • Controller Size: 160 x 95 x 40mm/6.30 x 3.74 x 1.57 in (Excluding Electrode Connector) • Control Socket Size: 130 x 65 x 53mm/5.12 x 2.56 x 2.09 in (Including Fuse) • Length of Sensor Line Length: 2m / 6.56ft • Measuring Range: • PH: 0.00-14.00PH • ORP: -2000-+2000mV • Temp: 0°-50°C (32°F-122°F) • Alarm Setting Range: • PH: 0.00-14.00PH • ORP: -2000 - 2000mV • Resolution: PH: 0.01PH; ORP: 1mV; Temperature: 0.1℃ (0.2℉) • Accuracy: PH: ±0.1PH; ORP: ±5mV; Temperature: ±1.0℃ • Power Supply: AC230, 50Hz (EU) • APP Name: Tuya • OS Requirement: Compatible with iOS and Android system • Operating Temperature: 0~50℃ (32~122℉) Package included: •1 x Water Quality Controller •1 x PH Electrode •1 x ORP Electrode •1 x Temperature Electrode •2 x Suction Cups •4 x Screws •4 x Bolts •1 x English User Manual