Aquarium Stick-On Liquid Crystal Thermometer

Keep your fish tank at the perfect temperature with this easy-to-read liquid crystal thermometer. Simply stick it to the outside of your glass for instant, accurate monitoring without any batteries or wires. Dual-scale display shows both Celsius and Fahrenheit simultaneously Color-coded temperature indicators: green for optimal, blue for cold, and brown for hot High-accuracy liquid crystal sensor with a range of 18–34 °C (64–93 °F) Waterproof and battery-free design for safe, maintenance-free us