ZKTeco F18 User Manual page 9

F18
heat or fire hazard.
7. Replacement parts - When replacement parts are needed, service technicians must only use
replacement parts provided by the supplier. Unauthorized substitutes can result in a burn, shock,
or other hazards.
8. Safety check - On completion of service or repair work on the unit, ask the service technician to
perform safety checks to ensure proper operation of the device.
9. Power sources - Operate the system only from the label's power source form. If the sort of power
supply to use is unclear, call your dealer.
10. Lightning - Can install external lightning conductors to protect against electrical storms. It stops
power-ups from destroying the system.
Recommended installing the devices in areas with limited access.
Electrical Safety
Before connecting an external cable to the device, complete grounding properly, and set up surge

protection; otherwise, static electricity will damage the mainboard.
Make sure that the power has been disconnected before you wire, install, or dismantle the device.

Ensure that the signal connected to the device is a weak-current (switch) signal; otherwise,

components of the device will get damaged.
Ensure that the standard voltage applicable in your country or region is applied. If you are not sure

about the endorsed standard voltage, please consult your local electric power company. Power
mismatch may cause a short circuit or device damage.
In the case of power supply damage, return the device to the professional technical personnel or

your dealer for handling.
To avoid interference, keep the device far from high electromagnetic radiation devices, such as

generators (including electric generators), radios, televisions, (especially CRT) monitors, or speakers.
Operation Safety
If smoke, odour, or noise rise from the device, turn off the power at once and unplug the power

cable, and then please contact the service centre.
Transportation and other unpredictable causes may damage the device hardware. Check whether

the device has any intense damage before installation.
If the device has major defects that you cannot solve, contact your dealer as soon as possible.

Dust, moisture, and abrupt temperature changes can affect the device's service life. You are

advised not to keep the device under such conditions.
Do not keep the device in a place that vibrates. Handle the device with care. Do not place heavy

objects on top of the device.
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User Manual