master accurate  aquarium digital ph test meter 61AA21

1.Power: 2W

2.Range: pH0~pH14

3.Display accuracy: 0.1Ph,

4.PH value of accuracy : ± 0.1%

5.Temperature accuracy: ± 1.0 °C

6.Operating temperature: 50°C to 50 °C

7.Humidity: less than 90%