This is an easy-to-use instrument to test the water quality of drinking water, aquarium, hydroponics, swimming pool and so on. It's multifunctional and can test PH / TDS / SALT / S.G / Temperature. Besides, it's supports APP remote control, which makes it more convenient to monitor anytime anywhere. Features: 5 in 1 Multifunction Tester with Bluetooth: PH / TDS / SALT / S.G / Temperature. Temperature unit switchable: / . It supports APP remote control, more convenient to monitor the water quality tester anytime anywhere. You can also set alarm value in the APP. Digital screen with backlight greatly enhances reading experience. And it supports automatic data storage, save data for 30 days in the APP. Easy, accurate, fast and steady to use. With wide range: PH ranges from 0.00 to 14.00, TDS ranges from 0 to 19900ppm, SALT ranges from 0 to 199.0ppt, etc. Water quality analyzer can be used to distinguish between drinking water and non-drinking water, and can test the water of aquarium, hydroponics, swimming pool, pond, lab, etc. Compact and space-saving, with 2 suction cups for easy installation. Please clean the electrode with distilled water and dry it well before use. Specifications: Plug: US / EU / UK (Optional) Model: 9951W Range: PH: 0.00-14.00pH TDS: 0-19900ppm 0-199.0ppt SALT: 0-199.0 ppt 0%-20% S.G: 0.990-1.400 Temp.: 0-50 (32 -122) Resolution: PH : 0.01pH SALT: 1ppm ( <1999ppm ) 10ppm ( >1999ppm ) 0.1ppt 0.01% TDS: 1ppm ( <1999ppm ) 10ppm ( >1999ppm ) 0.1ppt S.G : 0.001 Temp: 0.1 ( 0.2 ) Accuracy: PH : ±0.03 SALT/TDS : ±2%F.S Temp : ±1.0 Material: ABS Item Size: 100 * 75 * 22mm / 3.94 * 2.95 * 0.87 inch Item Weight: 121g / 4.27oz Package Size: 23.2 * 15.5 * 6.5 cm / 9.13 * 6.1 * 2.56 inch Package Weight: 488g / 17.21oz Package List: 1 * Water quality analyzer 1 * Electrode 1 Pack * Accessories 1 * Charger 1 * User Manual (English)