Suitable for Different Water Types: Such as freshwater, salty water and marine water. Digital thermometers are also widely used in monitoring the living temperature for reptiles such as lizards, turtles, tortoises, etc. Memory & Alarm Clock Function: The measurement range of digital fish tank thermometer is -50~70°C (±1°C) and the humidity is 10-99% RH (±5RH). Automatically recorded the MAX/MIN temperature humidity values, equipped alarm clock function reminds you to observe the temperature of the aquarium to adjust it in time. Real-time Monitoring of Temperature Aquarium: Accurate to measure the aquarium temperature with a single cable probe. Putting the probe into the aquarium, the temperature of the aquarium will be displayed in the OUT column. At the same time, indoor temperature (IN column showing) and humidity can be measured. Bracket & Hanging Design: 3.94*14.1* 0.9-inch compact size, only 150g weight. The back bracket can make the thermometer standing on the table, or you can hang it on the wall. Venting holes of the back help to dissipate heat continuously. Passed CONFORMITY EUROPEENNE Certification & EMC Test: Digital aquarium thermometer is made from ABS recoverable engineering materials, protect the health of your family and favourite fish. LCD screen with big numbers is easy to read.