Chlorine Water Temperature Detector in Aquarium Description: 6in1 detection function: This tester of water quality can measure PH, total dissolved solids content, total dissolved solids content, EC, temperature and chlorine in water and help to fully understand the quality of the test water. Mobile phone view: When properly connected to your mobile phone via Bluetooth, all test results can be displayed in the app. Large display screen with backlight: The large display screen with backlight allows you to read test data normally even in light or even in complete darkness, and also allows you to turn on/off the backlight of your mobile phone. IP67 waterproof: The IP67 waterproof rating ensures that this product can be used normally in water and can provide a long service life. You can set the upper or lower limit PH/EC/ORP depending on your needs. When the test results are above or below the range, the value will be displayed in red to alarm you. Specification: Material: White Size Chart: Size: 155x35mm/6.10x1.38 inch The package includes: 1 x Tester water quality