If you've been looking for a fish tank temperature measure , then your search is over! That's because our product adopts reliable circuits and materials to ensure measurement, keep the water temperature of the aquarium stable. Features -Color: White -Material: ABS -Size: 12.60X7.50X0.90cm/4.95X2.95X0.35in -Instant measuring, temperature control, will not hurt your fish. -Anti-explosion glass and over temperature protection, safe to use. -Waterproof and safe material for long time use. -Good to keep the water temperature of the aquarium stable. -Can be given as a present to your fish owner family and friend. Specification Room temperature range: -20~8 centigrade, Deviation: ±0.3 degree centigrade Humidity measurement range: 0~100%, Deviation: ±2% Temperature range: -10~50 degree centigrade, Deviation: ±0. centigrade Battery power: 3V Temperature probe wire: 1m Temperature: Resolution: 0.01 degree centigrade Accuracy error: ±0.3 degree centigrade Measurement range: -9~50 degree centigrade Humidity: Resolution: 0.024% Accuracy error: ±2% Measurement range: 5~ Package list: 1 x Aquarium