Displays both Fahrenheit and Celsius: The stick-on digital temperature strip measures temperatures in both Fahrenheit and Celsius. The thermometer has a range of 64F to 93F and 18C to 34C. Large numbers indicate Fahrenheit, small numbers indicate Celsius. Easy to install: Simply peel off the backing to expose the adhesive and apply to the front of your fish tank, aquarium, jar, or fermentation bucket. Remove the transparent protective film before use. Single-use application. Ideal for quickly monitoring the temperature of fish tanks, wine jars, and similar containers. Standard size: The adhesive crystal strip thermometer is sized to fit most surfaces. Suitable for use in fermenting, brewing, wine making, beer production, and aquariums. Wide temperature range: Measures from 64F to 93F with 1F accuracy. After 2 to 5 minutes, the color changes to indicate the exact temperature. Keep away from direct heat sources. Package includes: 36 digital temperature stickers. Sufficient quantity for long-term use in various applications. Suitable for monitoring temperature in fish tanks, aquariums, DIY beverages, wine barrels, and other pet tanks. Color: Black Material: PET Size: 13 x 1.8 cm Package Contents: 36 x Digital Temperature Sticker Note: Light and display settings may cause slight color variations between the image and the actual item. Measurement error allowance is +/- 1-3 cm.