Technical Specifications (Xiaomi Water TDS Tester Pen)

Product Name: Xiaomi TDS Meter Water Quality Tester Pen
Measurement Range: 0 - 9990 ppm
Resolution: 1 ppm (0-999 ppm) / 10 ppm (1000-9990 ppm with blinking 'x10' icon)
Accuracy: High accuracy with automatic temperature compensation
Display: Monochrome LCD digital display
Sensor Material: Anti-rust and anti-corrosive
Water Resistance: IPX6 certified
Hold Function: Yes (saves measurement for convenient reading)
Auto-off: Yes (after 10 minutes of non-use)
Recalibration: Yes (adjustable with mini-screwdriver)
Housing Material: Translucent blue, strong and durable plastic
Technology: Advanced microprocessor
Detects: Total Dissolved Solids (TDS), organic compounds, heavy metals (nickel, chromium, etc.), soluble salt content
Power Source: Battery (assumed, replaceable)
Use Case: Drinking water purity testing, determining if purification is required