What is the operating temperature of the coolers 30/40/50? How do I set the temperature?
The temperature range for the coolers is -20 ℃ to 20 ℃ (-4°F to 68°F).
Press the Settings button (on the display screen) until the temperature flashes.
Press the up or down buttons to adjust the temperature by zone, then press the Settings button again to confirm.
L/M/H signifies the three protection levels: Low, Medium, and High.
If you connect EverFrost via your car's auxiliary power outlet, set the protection level to M or H.
You can set the level to L if you connect EverFrost via an independent power source, such as the detachable battery or a portable power station.
If you have any questions, please contact us for further assistance.


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