Aquarium thermometer with alarm: Keeping the water temperature in your aquarium close to the fish's natural habitat is important. But how do you achieve this? A perfect aquarium thermometer is key. This thermometer, with its accurate indoor and outdoor temperature readings and high/low temperature alarm function, is robust and durable, and its large display makes it easy to reach the ideal water temperature, close to the fish's natural habitat. It measures both indoor and outdoor temperatures in your aquarium (accuracy down to 0.1 °F). When the display shows \"In\", the outdoor temperature is measured by the thermometer's body. Maximum and minimum temperature on the thermometer to suit your needs. When the aquarium temperature is above or below the set temperature, the thermometer will sound an alarm. Just set it and let it do its job; it will control everything for you! Robust and durable: The aquarium thermometer's body is made of high-strength ABS, making it robust and durable, with no risk of damage from external forces. Unlike other simple temperature probes, it uses stainless steel probes, which are durable and corrosion-resistant, do not rust, provide more sensitive temperature readings, and have a lifespan 1.5 to 2 times longer than other thermometers.