SunGrow LCD Digital Thermometer for Fish and Reptile Tank - Maintains The Right Aquarium or Terrarium Temperature: Records Temperature in Celsius & Fahrenheit: Easy-to use : Battery Included ACCURATE TEMPERATURE READING IN 5 SECONDS--- SunGrow Digital Thermometer with LCD display can read in Fahrenheit and Degree Celsius both at the touch of a button. To turn on or off, just press and hold the PWR (Power button) for 3-5 seconds. TARGETED READING WITH READER TIP --- Reader tip is designed to measure temperature in the fish and/or reptile tank and will not be affected by surrounding room temperatures. SUITABLE FOR ALL ENVIRONMENTS --- Use the SunGrow Digital Thermometer in your fish aquarium or reptile habitat. It is compatible with all types of aquariums. The thermometer has a range of -50 degree to +70 degree Celsius (-58 to 158 degree Fahrenheit). EASY TO INSTALL --- Attach LCD screen reader on the outside of your tank with a suction cup. Place the Reader tip (Sensing Probe Cable Line) in the tank where you want the temperature read and attach that with a suction cup. Then just press the button on the screen anytime you need to take a reading. MADE TO LAST --- Made of durable plastic and clear, big LCD screen, lightweight and easy to read. Unobtrusive and long lasting. Comes with suction cups and LR44, 1.5v battery included, cable with 40" length and ready-to-go upon arrival.