Tuya BT 5-in-1 Multifunctional Digital Water Quality Tester Portable High Accurancy Water Quality Test Pen Water Quality Measurement Tool Water PH/TDS/EC/Temperature/CF Detector

Features:
Large screen for convenient and clear data reading.
Use 4 * LR44 button batteries, long working time and easy to replace the battery.
The electrode heads can be replaced to extend its service time.
Not only can it be used for detecting drinking water, but it can also detect soil, dough, milk, skincare products, etc.
Compact size and light weight for convenient carrying and storage.
Quick and accurate test.