Carefree Fish Aquarium USB Thermometer Rechargeable Cordless Human Sensor Switch Fish Tank Thermometer Overtemperature Sound Alarm ±1℉（Power Adapter and Charging Cable not Included）

Easy to install, cordless: installed on the outside of the fish tank.Notice:Charge 2 hours before use.

Accurate temperature measurement: ±1℉

Infrared sensing: When the human body goes to a distance of 2 meters, the thermometer will automatically light up, easy to read, usually keep out state, has saved electricity.

Overtemperature audible alarm: Below 65 ° F, above 90 ° F, the thermometer will emit a beep alarm.

Low battery alarm: When the battery is low, the battery sign will appear and flash to remind you that the battery needs to be replaced.