Aqua One Electronic Thermometer Suitable for tropical, cold water, and marine Features : Large easy to read LCD screen Simple operation Temperature reading range from -10 degree – 50 degrees celcius.
Open the battery cover and insert the battery (provided) + side up.
Using the suction cup, attach the display unit to the outside of the aquarium.
Submerge the probe into the water in the aquarium.
Do not submerge the display unit, only the probe is water resistant.
To preserve the battery life, press the FSW button for three second to power off or remove the battery.
To power on, press the FSW button