| Product Name | TDS Meter Water Quality Tester |
| Measuring Range | 0-9990ppm |
| Deviation | ±2%-3% |
| Resolution | 1ppm |
| Voltage | 3V (lr44 Button Battery) |
| Product Dimensions | 25*14*134mm |
| Product Weight | 40g |
| How to use | Open the pen cap, press ON/OFF to turn it on, put the product into the water to be measured, shake it gently, and press HOLD to lock the value after the value is stable. |
