1. Scan the QR code and download the mobile APP software. There are two types of QR code, Android and ios, please scan and download and install according to the corresponding QR code of the mobile phone system.
2. Turn on the Bluetooth function: After the water quality pen is turned on, there is no Bluetooth logo and it cannot connect to Bluetooth. You need to press and hold the power button for 5 seconds, ，and then you can connect to Bluetooth after the Bluetooth logo appears.
3. Turn off the Bluetooth function: After turning on the Bluetooth standard, press the power button for 5 seconds to turn off the Bluetooth function.
【pH Meter with Bluetooth】Professional measurement pH, TDS(ppm), EC(Conductivity), ORP, S.G, Salinity(ppt), and Temp. suitable for household drinking water, hydroponics, lab, aquarium. It can be used as a classic tester even if it is not connected to a smartphone.It can be used as a classic tester even if it is not connected to a smartphone.
【Multifunction Salinity tester】Salinity Range is 0-10000ppm, Salinity tester has an automatic temperature compensation function(32°F~140°F), which can decrease the error caused by the change of liquid temperature.
1 x 7 in 1 Test Pen