Wireless Sticker Design: The aquarium thermometer comes with a sticker. It can be stuck on the outer glass of the aquarium. No need for a wired probe. LED touch screen: just press the fingerprint button to brighten the screen. The digital aquarium thermometer is designed with LED digital display screen, which can be easy to read. High Accuracy: The aquarium thermometer comes with an accurate temperature sensor, which which allows it to accurately measure approximately 0-99. Please note that there may be a deviation of 0.1. Easy to Use: Comes with a large, easy to read LCD display clearly. Simply tear off the adhesive film and stick the digital thermometer on the outside of the tub below the waterline. You can read the temperature after 10 minutes. Wide application: ideal for water or high humidity environments like aquarium terrarium or vivarium suitable for different types of water such as aqua fresh, tap water, salt water, sea water, etc. The aquarium thermometer is not waterproof, please do not immerse it in water.