Specifications: EASY TO SETUP - This aquarium thermometer can easily be set in minutes. Simple mount main display unit over the tank! And place the sensor probe inside the water! WIDE RANGE & ACCURATE - Measure -58.0 to 158.0 degree Fahrenhit (-50.0 to 70.0 degree Celsius) with accuracy +/- 1 degree Celsius TEMPERAURE UNITS - Easy switch between degree Celsius and Fahrenhit WIDE VARIETY OF AQUARIUM AND WATER TANKS - Suitable for different water types such as fresh water, tap water, salty water, marine water and etc. GREAT FOR REPTILE - Suitable for monitoring the living temperature for reptile such as lizard, turtle etc. Features: 100% Brand New & High Quality High quality suction base, easy to install Compact design for discrete use Temperature Range: -50°C +70°C (-58℉158℉) Usage Temperature: -10°C +50°C(14℉122℉) Usage humidity: 5%80% Accuracy: ±1°C Resolution: When temperature -20℃, it is 0.1°C, When temperature ≦-20℃, it is 1°C Switch of °C / ℉ Power: 1 X LR44 button battery (included ) Machine size: 58×37×16mm Display size: 26.5×13.5mm Color: black, yellow Package Included: 1pc x Aquarium Thermometer