Digital Aquarium Thermometer: LED display fish tank thermometer features professional LCD visuals that clearly display fish tank and aquarium water temperature even under night light and can be easily read. Easy installation and accurate data: The water tank thermometer does not require any installation tools. Remove the adhesive on the back and on the outside of the tank below the water level. The water tank thermometer aquarium measurement range is 32°F - 140°F with an accuracy of 0.18 ° F and F and the error ± 1 ° F Suitable for axolotl tanks, turtle thermometers, saltwater fish tank accessories, fish tank thermometers, etc. Ultra- battery: The aquarium fish tank thermometer is rechargeable, and the wireless aquarium digital thermometer will automatically enter sleep mode after 5 seconds of no operation, extending battery life and being more environmentally friendly and energy-saving. color: Black material: plastic Package Contents: 1 x Fish tank thermometer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.