Spec:
Item Type: DO Dissolved Oxygen Floating ​ Tester
Material: ABS
Range: Dissolved Oxygen: 0-199.9%, 0-20mg/L, Temperature: 0°C-50°C (32°F-122°F)
Resolution: Dissolved Oxygen: 0.1%, 0.01mg/L, Temperature: 0.1°C (0.2°F)
Accuracy: Dissolved Oxygen ±3%F.S, Temperature: ±1.0°C
Battery: Li Ion Battery 500MAH (Included)
Temperature Compensation: 0°C-50°C
Operating Temperature: 0°C-50°C
Weight: Approx. 240.00g / 8.47oz

How to Use:
1. Connect the USB end of the original magnetic charging cable to a universal phone charger (5V 1A+). 2. Locate the charging port area on the device.
3. Bring the other end of the magnetic charging cable (the part with the magnet) close to the device's charging port area, they will automatically assemble together due to the magnet's attraction.
4. Once the charging cable is successfully connected to the device, the device will light up in red (indicating charging), and the green light will come on when fully charged (the full charging process takes about 4 hours).

Package List:
1 x Tester
1 x Charging Cable
1 x Manual
2 x Accessories
2 x Calibration Powder Packs

Notice:
1. If the instrument fails to start up normally, please charge it in time. 2. During charging, please avoid frequent movement or touching of the instrument to prevent affecting the charging effect or causing damage.
3. If you find the charging speed abnormally slow or unable to charge, please check whether the connection between the charger and the instrument is tight and whether the power supply is normal.
4. After use, ​ the electrode with distilled water or ​ water, and gently dry the electrode with filter paper.