6pcs TDS-3 Handheld Digital LCD Water Quality Tester Pen Temp/PPM Filter Water Purity Meter the IP Camera can be

the IP Camera can be linked through the internet without any complicated port mapping

flexibly fitting smartphones with different widths

Band 8 (900MHz) 2G: GSM Band 2 (1900MHz)

Powerful Processor

Playing MP3 Music

6pcs TDS-3 Handheld Digital LCD Water Quality Tester Pen Temp/PPM Filter Water Purity Meter the IP Camera can beProduct Features: What is TDS: Total dissolved solids are the total weight of all solids(minerals, salts, metals, etc) that is dissolved in a given volume of water, express in milligrams per liter(mg L), or in parts per million(ppm). Use the TDS meter to: Check the performance of your water filter. Check the hardness. Make sure you always drink pure water. Hold function: Saves measurements for convenient reading Auto off function: Turn off meter after