The device is specially designed for long term monitoring the pH value, salinity value, and temperature of water in fish tank or aquariums. Features: Multifunctional Water Quality Analysis Device: for 24 hours real time monitoring the pH value, salinity value and temperature of the fish tank or aquariums. Compact and Easy to Install: easily hanging the water quality monitor device on the fish tank by the included brackets or fixing it on the wall via the hanging hole. It also equipped with 2 suction cups for fixing the electrode on the fish tank wall. pH Value Measuring: 0.00~14.00pH measurement range, 0.01pH resolution, and ±0.1pH accuracy. Salinity Value Measuring: 0~199.9ppt measurement range, 0.1ppt resolution, and ±2%F.S accuracy. Temperature Measuring: 0~50 measurement range, 0.1 resolution, and ±1 accuracy, / temperature unit switchable. Reliable Quality: high sensitivity electrode probe smart chip for fastly and accurately measurement, and 2 LCD screens with green backlight for displaying the pH value, salinity value and temperature clearly. Wide Applications: perfect for seawater, horticultural and hydroponics applications where pH and salinity levels need to be continuously monitored for optimal plant growth. Specifications: Plug Type: EU / US / UK (Optional) Material: ABS Input: AC230, 50Hz(EU); AC120, 60Hz(US); AC240, 50Hz(UK) Output: DC5.7V, 100mA RANGE: pH: 0.00~14.00pH Salinity: 0~199.9ppt Temperature: 0~50°C RESOLUTION: pH: 0.01pH Salinity: 0.1ppt Temperature: 0.1°C ACCURACY: pH: ±0.1pH Salinity: ±2%F·S Temperature: ±1°C Operating Environment: 0~50°C, ≤95% Automatic Temperature Compensation: 0~50°C Power Supply: DC6V adaptor Item Size: 130 * 77 * 26mm / 5.12 * 3.03 * 1.02in Item Weight: 422g / 14.89oz Package Weight: 570g / 20.12oz Package Size: 20.5 * 19 * 5.5cm / 8.07 * 7.48 * 2.17in Packing List: 1 * Water Quality Monitor 1 * pH Electrode 1 * Salinity Electrode 1 * Temperature Probe 1 * Mini Slotted Screwdriver 1 * Power Adapter 2 * Support Bracket 2 * Suction Cup 2 * Double-side Tape 1 * Manual (English)