Practically, you can measure pH, TDS, EC and water temperature in one tool
Package Contents:
• TDS/EC/pH/Temp meters
• pH calibration powder for 4in1 variations and pH meters
• Guide Paper
• LR44 battery (installed)
Excess :
• Practically can measure pH, TDS, EC, and water temperature in 1 tool
• HD display that makes measurements easy
• Waterproof
• Calibrate automatically with just the press of a button