2pcs Aquarium Digital Thermometer with LED Touch Screen - Stick-on Fish Tank Thermometer for Betta Tanks， Cordless Waterproof Sensor

Material: Plastic

Size:4.8*2.8*1cm

1. Remove the battery separator, tear off the adhesive on the back of the Velcro, and stick it below the water level outside the fish tank (it cannot be used in water). After standing for 10 minutes, the temperature can be accurately measured.

2. To check the water temperature in the fish tank, please lightly touch the button to turn on the temperature display. After about 10 seconds, it will automatically enter energy-saving sleep mode. When checking the water temperature again, please repeat the above operation.

When the water temperature is below 15 ℃ (59 ℉), the blue LED light flashes for 10 seconds to remind; When the water temperature exceeds 34 ℃ (93 ℉), the blue LED light flashes for 10 seconds to remind; If the water temperature does not change, flash for 2 seconds every 30 minutes and repeat 6 times before stopping the alarm prompt.

When the thermometer runs out of power, you can remove the thermometer, open the battery compartment on the back to replace the battery, then stick the thermometer back to the fish tank and continue using it.