Temperature Range -58℉~ +158℉(-50℃~ +70℃)

Operation stepts：
1. Attach the display unit to the outside of the tank using the suction cups and submerge the probe into the water in the tank.
2. Press and hold the power (PWR) button to turn on. Hold the power button for 3 seconds to turn off.
When temperature is higher than 70°C or lower than -50°C, "H°C" or "L°C" pops up on the screen. The main display unit of the thermometer must be kept away from water because it is not waterproof.

Package include:
5 x Digital thermometer
10 x Suction cups

Note: The temperature indicator cannot be immersed in water.