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PRODUCT INFORMATIONProduct net weight: 32gProduct size: 5.5" x 1.02" x 0.6"Battery specification: 1.5V × 2 (button batteries)---DEVICE PARTS AND FUNCTIONSBattery Compartment: Located at the top, houses two button batteries.Low Power Display: Shows battery status and TDS value with a detectable range of 0–9999 ppm.Power Button/Lock Button:Turns on the device upon immersion in water.Locks the displayed value after removing the pen from water.Hold Button: Holds the reading on the display.Titanium Alloy Electrode: Ensures high sensitivity and rapid detection (approximately 3 seconds).Pen Cap: Protects the electrode when not in use.---PRECAUTIONSWater temperature: Not suitable for high-temperature water.Scenario:Not designed for use in water bodies with significant movement or sloshing.When in use, water should not exceed the tip of the pen.Water pollution:Detects only conductive substances.Cannot detect bacteria, viruses, or other non-conductive contaminants.