1、WIDE COPE OF APPLICATION The digital water quality tester is widely used to measure PH/EC, which is very convenient. 2、EASY TO READ The multi function tester has a clear LCD with backlight, which can be monitored online for a long time. 3、USING RANGE Suitable for water sources, aquariums, hydroponics, laboratories, spas, swimming pools and other water systems. 4、EASY TO USE The PH/EC tester can detect water quality for a long time and provide instant visualization of the results. 5、RUGGED AND DURABLE Made of high quality ABS material, not easy to damage, long service life, and can be used for a long time with confidence. 1 x  Water Quality Tester1 x Probe1 x Adapter1 x Connection Line1 x Manual 4 x Accessories  Item Type: Water Quality TesterMaterial: ABSWeight: Approx. 621g / 21.9ozProduct Size: Approx. 152x80x26mm / 6.0x 3.1x 1.0inScope:PH: 0.00~ 14.00pHRelative Humidity: 10%RH~99%RHEC: 0.00~ 19.99ECResolution:pH: 0.01pHRelative Humidity: 1%RHEC: 0.01ECAccuracy:PH: ± 0.1pHRelative Humidity: 5%RHEC: ±2%F.SPower Supply: DC 6V (available power adapter)Battery: Ni-MH battery 110MAH (delivered with built in battery)Temperature Compensation: 0℃~50℃