ZKTeco F18 User Manual page 10

F18
Do not apply rosin, alcohol, benzene, pesticides, and other volatile substances that may damage

the device enclosure. Clean the device accessories with a piece of soft cloth or a small amount of
cleaning agent.
If you have any technical questions regarding usage, contact certified or experienced technical

personnel.
Note:
Make sure whether the positive polarity and negative polarity of the DC 12V power supply is

connected correctly. A reverse connection may damage the device. It is not advisable to connect
the AC 24V power supply to the DC 12V input port.
Make sure to connect the wires following the positive polarity and negative polarity shown on the

device's nameplate.
The warranty service does not cover accidental damage, damage caused by mis-operation, and

damage due to independent installation or repair of the product by the user.
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