Water Quality Tester, TDS Meter, EC Meter and Thermometer in one, Wells, Swimming Pools

Multipurpose: Test drinking water purity to ensure it's healthy, monitor if Reverse osmosis (RO)/DI system works properly, whether filter need replaced, maintenance aquarium, hydroponics (test nutrients), pool and spa, etc. Long lifespan: Long battery life and lower power consumption; Auto-off function saves on battery usage and our TDS meter has lower power consumption than HM TDS meter 【3-in-1 Detection Pen】It can detect TDS, conductivity and temperature, making it an ideal water quality testing instrument. 【Liquid crystal display, fast detection speed】 1. It has an LCD display, water quality and temperature are displayed together; 2. The probe is made of titanium alloy, with fast detection speed, high reading accuracy and free from electromagnetic interference. 【Temperature unit conversion】It can convert Celsius to Fahrenheit for different needs. 【How to use】First click on the on/off button, then click on the function to go to the function that needs to be tested and place it in about 1 inch of water to get an immediate reading.