Accurate Temperature Monitoring:
Easily monitor your aquariums temperature with precision. Simply press and hold for 3 seconds to switch temperature units. Monitoring range: 0℉ to 99℉. Accuracy: ±0.9°F.
Please Note: If you use a heater, there may be differences in the local temperature of the fish tank.
you can measure the accurate temperature by placing this magnetic brush in water for about 10 minutes. However, there is a temperature difference of about 2-3°F between the internal temperature of the water and the colder external temperature of the water tank.