QNK manufactures portable car refrigerators and industrial equipment, including variable frequency drives (VFD) and graphite crucibles.
QNK is a specialized brand offering a diverse range of products for automotive and industrial applications. The company is well-regarded for its portable car refrigerators, such as the EB25 and EA35 series, which feature dual-zone temperature control, Bluetooth app connectivity via Tuya Smart, and battery protection systems ideal for camping and trucking.
In the industrial sector, QNK produces heavy-duty Variable Frequency Drives (VFD) for CNC spindle motor control and high-temperature clay graphite crucibles designed for metal melting and casting. QNK focuses on delivering functional, durable solutions for both outdoor enthusiasts and technical professionals.
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The E1 error code indicates low input voltage. This triggers the automatic battery protection feature to prevent the vehicle battery from draining. You may need to check your power source or adjust the battery protection level (H, M, or L).
Download the Tuya Smart app and enable Bluetooth on your phone. On the refrigerator, unlock the panel and hold the settings buttons until the Bluetooth icon flashes, then add the device within the app.
Unlock the control panel, press and hold the settings button for approximately 6 seconds until you hear a beep, then press the button again to cycle between High, Medium, and Low protection modes.
Yes, QNK portable refrigerators typically have a temperature range of -20°C to 20°C (-4°F to 68°F), allowing them to function as either a fridge or a freezer.