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Quality Assurance Policy

Customer Support
E-mail sales@ktnc.co.kr
Service You can inquire about service problems such as product breakdown and repair.
Business Time Monday to Friday : 9:00 ~ 18:00
Lunch time : 12:00 ~ 13:00
Weekends / holidays are closed.

KT&C Co., Ltd. carries out the following quality assurance according to its quality assurance policy.

Product Line Warranty
Electronic door lock 1 years
Access control device 1 years
Accessories Not Applicable
* The warranty period may vary depending on the product. For more information, please contact Customer Service.
Service charge

The service fee is the sum of the parts cost and the technical fee.

Service charge = spare parts cost + technical fee (Repairing rate applied) + travel expenses (*if required)

  • Parts Cost

    Parts cost is the price of parts when parts are replaced when the finished product is repaired, calculated according to service standards.

  • Technical fee

    The technical fee is calculated by taking the time required for repairs, difficulty, etc., into consideration when paying for repairs, excluding parts costs.

  • Travel Expenses

    Travel expenses are charged for a demand of business repairing and are charged regardless of the distance.

  • Freight cost

    Fees are charged separately.

Paid/Free Service
1.  Free Service
  • 1) Failure or defect in normal use within the warranty period
  • 2) If the same disorder occurs again in the same site during normal use within 2 months of repair
  • 3) If we decide to provide free service in accordance with the company policy
2.  Paid Service
  • 1) Products with out of warranty
  • 2) Even within the guarantee period, the service charges may be charged in the following cases.
    • a. If a failure occurs due to carelessness by the user after installation (movement, dropping, impact, breakage of parts and products, inputting of foreign objects, unreasonable operation, setting errors, etc.)
    • b. In the event that a fault occurs due to a fault in the repair or replacement or due to the repair or replacement of parts without our prior consent
    • c. Failure due to natural disaster (fire, salt, gas damage, earthquake, flood, lightning, etc.)
    • d. Failure due to abnormal power supply and defective connection equipment
    • e. If the problem is caused by poorly installed installation company
    • f. When consumable parts (accessories, adapters, etc.) are out of service or damaged
  • 3) Second repair service imposes repairing cost if it is caused by insufficient usage by customer.
  • 4) If there is no label (product name and serial number) on the product
  • 5) ETC
    • a. Service fees charged to consumers for paid services are classified as parts costs and technical fees and are subject to separate service management standards.
    • b. We will send a quotation to the consumer based on the prescribed form for the paid repair case, confirm the repair, repair it, and charge the fee.
    • c. Product reparied under out of warranty and w/o serial numbers are applied with 6 months of re-warranty period. (180 days) (based on date of shipment after reparing).
      - In the event of the same component failure as the previous one, the repair will be free of charge.
      - Products without serial label are shipped with internal serial numbers or labels managed separately.