User's Manual

Table Of Contents
4-inch Visible Light Terminal
User Manual
Page | 7 Copyright©2020 ZKTECO CO., LTD. All rights reserved.
1 Safety Measures
The following precautions are to keep the user’s safety and prevent any damage. Please read
carefully before installation.
1. Read, follow, and retain instructions - All safety and operational instructions must be properly
read and followed before bringing the device into service.
2. Do not ignore warnings - Adhere to all warnings on the unit and in the operating instructions.
3. Accessories - Use only manufacturer-recommended or product-sold accessories. Accessories not
recommended by the manufacturer must not be used.
4. Precautions for the installationDo not place this device on an unstable stand or frame. It may
fall and cause serious injury to persons and damage to the device.
5. Service - Do not try to service this unit yourself. Opening or removing covers may expose you to
hazardous voltages or other hazards.
6. Damage requiring service - Disconnect the system from the main AC or DC power source and
refer service personnel under the following conditions:
When cord or connection control is affected.
When the liquid was spilled, or an item dropped into the system.
If exposed to water and/or inclement weather (rain, snow, and more).
If the system is not operating normally under operating instructions.
Just change controls defined in operating instructions. Improper adjustment of other controls may
result in damage and involve a qualified technician to return the device to normal operation.
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 unit.
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 - External lightning conductors can be installed to protect against electrical storms. It
stops power-ups destroying the system.
The devices should be installed in areas with limited access.