?MATERIAL PRODUCT MATERIAL? The aquarium thermometer uses high precision stainless steel sensor probe to measure aquarium water temperature. The main unit uses professional LCD display to solve the problem of not knowing the temperature of the aquarium, thus providing a healthy and comfortable aquatic environment for all kinds of fish. ?LARGE DISPLAY? Digital aquarium thermometer with 1.6 inch large LCD display, easy to read temperature for children or the elderly, real-time monitoring of water temperature changes. ?WIDE TEMPERATURE TEST? Temperature range -58 ? ~ + 230 ?; Temperature measurement accuracy: ? 1 ?; It can be used to detect the temperature of many kinds of liquids, which makes your temperature measurement so simple. ?LONG BATTERY LIFE? Powered by two LR44 button batteries (Not included). ?The package includes? The package is included; 2 x aquarium thermometer Specification: 1. Temperature range: -50 ~ 110 ? C 2. Color: black 3. Temperature measurement accuracy: 1 ? C 4.