Digital Thermometer with External Probe

The Digital Thermometer with External Probe separates the display unit from the sensing element, allowing the LCD readout to be mounted outside the aquarium at eye level while a waterproof NTC probe hangs inside the tank at the desired depth. This approach provides far greater readout accuracy than glass thermometers — typically ±0.1°C — while keeping the display easy to read during routine observation.

The probe is small and unobtrusive, and can be secured with an included suction cup at any position in the tank. Battery-powered operation means the display can be placed on the cabinet top, hood, or wall without routing a power cord.

An essential tool for keepers of temperature-sensitive species, breeders monitoring spawning temperature, and anyone pairing a heater with an external controller that requires an accurate reference reading.