1. Introdução e maisview
The eSSL KartString Biometric Time Attendance Machine is designed to provide efficient and secure time management and access control for organizations. This device utilizes fingerprint recognition technology to accurately record employee attendance, ensuring only authorized individuals are tracked. It features a clear display, a user-friendly keypad, and robust data storage capabilities, making it an essential tool for modern workforce management.
This manual provides detailed instructions for the setup, operation, and maintenance of your eSSL KartString Biometric Time Attendance Machine.

Figura 1: Frente view of the eSSL KartString Biometric Time Attendance Machine, showing the display, keypad, and fingerprint sensor.
2. Recursos do Produto
- Reconhecimento de impressão digital: Secure and accurate biometric identification for attendance.
- High Transaction Storage: Capable of storing up to 100,000 attendance records.
- Color TFT Display: A 2.8-inch color display for clear user interface and information display.
- Multiple Communication Methods: Supports TCP/IP for network connectivity and USB-host for data transfer.
- Teclado integrado: Soft buttons for password entry and menu navigation.
- Design compacto: Measures approximately 183 x 45 x 138 mm, suitable for various installation environments.
- Software baseado em nuvem: Includes 6 months of cloud-based attendance management software by KartString for enhanced data management and reporting.
3. Instruções de configuração
Follow these steps to set up your eSSL KartString Biometric Time Attendance Machine:
- Desembalagem: Carefully remove the device from its packaging and ensure all components are present.
- Montagem (Opcional): Choose a suitable location for installation, typically near an entrance or exit. Secure the device to a wall using appropriate mounting hardware (not included, consult a professional if unsure).
- Conexão de energia: Connect the provided power adapter to the device's power input port and then plug it into a standard electrical outlet. The device will power on automatically.
- Conexão de rede (TCP/IP): For network-based data management, connect an Ethernet cable from your network router or switch to the device's LAN port.
- Configuração inicial: Upon first power-on, the device may prompt for initial setup, such as date, time, and administrator registration. Follow the on-screen instructions.
4. Instruções de operação
4.1 Administrator Registration
Before employees can use the system, an administrator must be registered to manage settings and user data.
- Pressione o OK botão para acessar o menu principal.
- Navegar para Gerenciamento de usuários or Inscrever usuário usando as teclas de seta.
- Selecione Register Admin ou opção similar.
- Follow the on-screen prompts to scan the administrator's fingerprint multiple times for accurate registration.
- Assign administrator privileges as required.
4.2 Employee Fingerprint Enrollment
Each employee needs to register their fingerprint(s) to use the attendance system.
- Access the main menu as an administrator.
- Navegar para Gerenciamento de usuários or Inscrever usuário.
- Selecione Novo usuário or Registrar impressão digital.
- Enter the employee ID (if prompted) and then instruct the employee to place their finger on the sensor.
- The device will prompt the employee to lift and place their finger several times for a complete scan.
- Confirm successful enrollment.
4.3 Recording Attendance
Employees can record their attendance by simply placing their registered finger on the sensor.
- Certifique-se de que o dispositivo esteja ligado e em modo de espera.
- The employee places their registered finger firmly on the fingerprint sensor.
- Upon successful recognition, the device will display a confirmation message (e.g., "Thank You" or "Punch In/Out Successful") and an audible prompt.
4.4 Gerenciamento de dados
Attendance data can be retrieved via TCP/IP network or USB-host.
- Via TCP/IP: Connect the device to your network. Use the provided cloud-based attendance management software or compatible third-party software to connect to the device and download attendance logs. Refer to the software's documentation for specific instructions.
- Via USB-Host: Insert a USB flash drive into the device's USB-host port. Navigate to Gestão de Dados or Baixar dados in the menu. Select the desired data (e.g., attendance logs, user data) and initiate the transfer to the USB drive.
5. Manutenção
Regular maintenance ensures optimal performance and longevity of your device.
- Limpeza do sensor: Gently wipe the fingerprint sensor with a soft, dry, lint-free cloth. Avoid using abrasive materials or liquid cleaners directly on the sensor.
- Limpando o dispositivo: Use um pano macio e levementeamp cloth to clean the exterior of the device. Do not allow water or cleaning solutions to enter the device.
- Backup de dados: Regularly back up attendance data to an external storage device (USB) or through the network software to prevent data loss.
- Atualizações de software: Check the eSSL website or contact support for any available firmware or software updates to ensure your device operates with the latest features and security enhancements.
6. Solução De Problemas
Esta seção aborda problemas comuns que você pode encontrar.
- Dispositivo não liga:
- Certifique-se de que o adaptador de energia esteja conectado firmemente tanto ao dispositivo quanto a uma tomada elétrica em funcionamento.
- Verifique se a tomada está funcionando conectando outro aparelho.
- Impressão digital não reconhecida:
- Certifique-se de que o dedo esteja limpo e seco.
- Place the entire pad of the registered finger firmly on the sensor.
- Try re-enrolling the fingerprint if recognition issues persist.
- Clean the fingerprint sensor as described in the Maintenance section.
- Cannot Connect to Network (TCP/IP):
- Verify the Ethernet cable is properly connected to both the device and the network router/switch.
- Check network settings on the device to ensure correct IP address, subnet mask, and gateway.
- Ensure your network router is functioning correctly.
- USB Data Transfer Failure:
- Ensure the USB flash drive is properly inserted and formatted to a compatible file sistema (ex.: FAT32).
- Try a different USB flash drive.
- Verify there is sufficient space on the USB drive.
If you encounter issues not covered here, please refer to the support section.
7. Especificações
| Modelo | KartString Biomax K 21 |
| Marca | eSSL |
| Sensor de impressão digital | Sensor Óptico |
| Capacidade de transação | 100,000 Registros |
| Mostrar | 2.8 Inch Color TFT |
| Comunicação | TCP/IP, USB-host |
| Dimensões (C x L x A) | 183 x 45 x 138 mm (aprox.) |
| Peso do item | 650 g |
| Cor | Preto |
8. Garantia e Suporte
The eSSL KartString Biometric Time Attendance Machine comes with standard manufacturer warranty. Please refer to your purchase documentation for specific warranty terms and conditions.
For technical assistance, troubleshooting, or inquiries regarding the included 6-month cloud-based attendance management software by KartString, please contact eSSL customer support or your authorized dealer. Contact information can typically be found on the eSSL official website ou na embalagem do seu produto.
When contacting support, please have your product model (KartString Biomax K 21) and any relevant purchase details ready.





