Key benefits - User friendly design: clean, simple appearance with a large blue font display for easy at-a-glance temperature readings, helping you monitor your aquarium quickly and with confidence. - Long lasting performance: made from reliable plastic and powered by a built in 3V low power battery, this thermometer can last up to 5 years, providing consistent temperature monitoring with minimal replacements. - Easy installation: peel off the tape backing and mount the thermometer on the outside of your fish tank in seconds, with no tools or complicated adjustments needed. Specifications and features - Function: external thermometer for aquarium temperature monitoring. - Material: durable plastic construction. - Power: built in 3V low power battery. - Battery life: up to 5 years of use. - Installation: tape mounting on the outside of the tank for quick, non intrusive setup. Use scenarios - Daily monitoring: place on the outside of your tank for quick temperature checks during routine feeding and maintenance. - New tank setup: use during initial setup and heater calibration to observe temperature changes and minimize fluctuations. - Home or office aquarium care: easy to read display from a distance, enabling convenient monitoring in a living space or workspace without opening the tank.