The HM Digital COM-80 is a waterproof EC/TDS/Temp HydroTester/Meter designed for measuring conductivity, total dissolved solids (TDS), and temperature in various liquids. Manufactured by HM Digital, this device is specifically built to provide accurate readings of the ppm and ppt levels in water. With its durable and waterproof construction, the COM-80 is suitable for use in a variety of industrial, healthcare, and laboratory settings where precise measurements are crucial for quality control and analysis.