1. High Precise Probe: Adopt high precise probe, which is corrosion resistance, has quick response, stable data measurement, and long lasting durability.     2. WiFi Connection: The tester can connect to the mobile phone via WiFi, transmit data stably, you can view the current data, historical data on the phone, very convenient.     3. Real Time Transmission: Data can be transmitted in real time, daily, weekly and monthly data can be viewed, the water quality can be easily grasped.     4. APP Alarm Setting: The App can alarm when the data is abnormally high or low, easy to set via for Tuya, create a smart scene and set the security range, select the alarm method beyond the security range is ok.     5. Wide Application: The tester is suitable for water source, soilless culture, aquarium, hydroponics, laboratory, spa, environmental water, swimming pool, water purification system, etc.         Specification: Item Type: Water Quality Meter     Material: ABS     Temperature Compensation: 0& 8451; to 50& 8451;     Working Temperature: 0& 8451; to 50& 8451;     Range:      PH: 0.00-14.00pH     EC: 0-19000us/cm, 0-199.0ms/cm     TDS: O-19990ppm, 0-199.0ppt     Salt: 0-199.9ppt, 0%-20%     SG: 0.990-1.400     Temperature: 0°C to 50°C (32°F to 122°F)     Resolution:      PH: 0.01PH     EC: 1us/cm(1000us/cm), 0.1ms/cm     TDS: 1ppm (1000ppm), 0.1ppt     Salt: 1ppm (1000ppm), 0.1ppt, 0.01%     SG: 0.001     Temperature: 0.1°C (0.2°F)     Accuracy:      PH: ±0.03pH     EC, TDS, SALT: ±2%F.S     Temperature: ±1.0& 8451;              Package List: 1 x Water Quality Meter    2 x Probe     3 x Installation Accessories     1 x Adapter          Note: