Feature: 1. High Precise Probe: Adopt high precise probe, which is resistance, has quick response, stable data measurement, and long lasting durability. 2. 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℃ to 50℃ Working Temperature: 0℃ to 50℃ 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), 10us/cm(>1000us/cm), 0.1ms/cm TDS: 1ppm (<1000ppm), 10ppm (>1000ppm), 0.1ppt Salt: 1ppm (<1000ppm), 10ppm (>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 Package List: 1 x Water Quality Meter 2 x Probe 3 x Installation Accessories 1 x Adapter Note: If it has been used in water for a long time, it is recommended to clean and maintain the electrode regularly. For example, after 1015 days of continuous use, take the electrode out and clean with clean water, then recalibrate it once and wipe off the water