1. 6in1 detection function: the digital water quality detector can detect PH, TDS, EC, ORP, CL and TEMP of water quality, giving you a comprehensive understanding of water quality. 2. Easy to use: the 6in1 water quality tester has data sync display, data storage and release functions. It can be connected to the mobile phone via Bluetooth and multiple data can be displayed at the same time on the mobile phone app, which is convenient and fast. You can set the lower or upper limit of EC/PH/ORP and if the test result is lower or higher than the value, it will be displayed in red. 3. Display: The water quality meter has a large display with backlight, so you can easily read the data in daylight or in the dark. The backlight can be turned on or off. 4. IP67 waterproof: The water quality tester is made of PP material, which is of reliable quality, has good waterproofing and a long life. Please note that you need to tighten the gasket (included) before putting it in water to avoid water ingress.