## ZKTeco K40 Pro — The ideal starting point for Vietnamese businesses to digitize attendance
K40 Pro is the most popular entry-level attendance machine in the KSRV Biometric category from ZKTeco — recommended by An Ninh Số for businesses deploying an electronic attendance system for the first time, looking to replace manual attendance logs or old paper card attendance machines.
ZKTeco's optical fingerprint sensor is optimized for Vietnamese conditions — providing stable recognition with moist fingerprints (due to hot and humid weather), dry fingerprints (from long hours in air conditioning), and worn fingerprints (factory workers). This is a key difference compared to some unknown low-cost brands on the market.
The K40 Pro connects to the ZKBio Time software via TCP/IP or USB flash drive — attendance data is automatically compiled into working hour reports, payroll calculations, and exported to Excel/CSV files compatible with popular accounting software in Vietnam such as MISA, Fast Accounting.
With a low investment cost, the K40 Pro is a suitable stepping stone before businesses upgrade to [SpeedFace-V5L[TD]](/san-pham/zkteco-speedface-v5l-rfid-face-attendance-workhorse/) as they scale up or require stricter access control. All employee data can be migrated to the new device without re-entering from scratch.
| Công nghệ nhận diện | Vân tay quang học ZKTeco + Thẻ RFID 125 kHz |
|---|---|
| Dung lượng vân tay | 3.000 template |
| Dung lượng thẻ | 3.000 thẻ |
| Dung lượng giao dịch | 100.000 bản ghi |
| Màn hình | 2.8 inch TFT màu |
| Giao tiếp | TCP/IP, USB Host, RS-232/485 |
| Nguồn điện | 5V DC (adapter đi kèm) |
| Tốc độ nhận diện vân tay | < 1 giây |
| Nhiệt độ hoạt động | 0°C đến +45°C |
| Phần mềm tương thích | ZKBio Time, ZKTime.Net, ZKBio CV Access |
- SME office under 100 employees — replace manual timekeeping logs, automate payroll calculation.
- Retail stores, restaurants, F&B chains — morning/evening shift attendance, overtime hour management
- Small manufacturing workshop — worker timekeeping, distinguishing day shift/night shift
- Preschools and language centers — teacher attendance tracking, reporting to parents
- Pilot project before upgrading to a full KSRV system with gate control.
Câu hỏi thường gặp
- K40 Pro can be used independently without a computer?
Yes. The K40 Pro operates completely standalone — employees clock in directly on the device, and data is stored in the internal memory. At the end of the month, the manager plugs in a USB flash drive to export the data to a computer and import it into ZKBio Time software for payroll calculation. Continuous network connection is not required.
- Can the K40 Pro control door locks?
The K40 Pro is a pure time attendance device — it does not integrate a relay output for controlling electric locks. If your business needs both time attendance and access control, An Ninh Số recommends upgrading to the SpeedFace-V5L[TD] with an integrated relay, or adding a separate KSRV controller.
- Is the ZKBio Time software free of charge?
ZKBio Time has a free version (ZKTime.Net) that supports a basic number of employees, suitable for SMEs. The ZKBio CV Access version is free for under 100 employees and offers more comprehensive features. For businesses with over 100 employees or those needing HR/ERP integration, contact An Ninh Số for consultation on a suitable license package.
- If an employee forgets to clock in or the device loses power, will the data be lost?
Transaction data is stored in internal flash memory (100,000 records) — not lost during power outages. In cases where employees forget to clock in, the ZKBio Time software allows manual attendance supplementation with reason notes, ensuring transparency for the HR department.