1. Introduzione è Overview
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: Fronte view of the eSSL KartString Biometric Time Attendance Machine, showing the display, keypad, and fingerprint sensor.
2. Caratteristiche di u produttu
- Ricunniscenza di l'impronta digitale: 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.
- Integrated Keypad: Soft buttons for password entry and menu navigation.
- Disegnu compactu: Measures approximately 183 x 45 x 138 mm, suitable for various installation environments.
- Cloud-Based Software: Includes 6 months of cloud-based attendance management software by KartString for enhanced data management and reporting.
3. Setup Instructions
Follow these steps to set up your eSSL KartString Biometric Time Attendance Machine:
- Unpacking: Carefully remove the device from its packaging and ensure all components are present.
- Muntamentu (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).
- Cunnessione di putenza: Cunnette l'adattatore di corrente furnitu à a porta d'entrata di alimentazione di u dispusitivu è dopu cunnettelu à una presa elettrica standard. U dispusitivu s'accenderà automaticamente.
- Cunnessione di rete (TCP/IP): For network-based data management, connect an Ethernet cable from your network router or switch to the device's LAN port.
- Configurazione iniziale: Upon first power-on, the device may prompt for initial setup, such as date, time, and administrator registration. Follow the on-screen instructions.
4. Operating Instructions
4.1 Registrazione di l'amministratore
Before employees can use the system, an administrator must be registered to manage settings and user data.
- Press u M/OK buttone per accede à u menu principale.
- Navigate à Gestione d'utilizatori or Iscriviti à l'utilizatore usendu i tasti freccia.
- Selezziunà Register Admin o opzione simile.
- 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.
- Navigate à Gestione d'utilizatori or Iscriviti à l'utilizatore.
- Selezziunà Novu utilizatore or Scrive Fingerprint.
- 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 Registrazione di a presenza
Employees can record their attendance by simply placing their registered finger on the sensor.
- Assicurà chì u dispusitivu hè alimentatu è in modu standby.
- 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 Gestione di dati
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 Gestione di dati or Scaricate Dati in the menu. Select the desired data (e.g., attendance logs, user data) and initiate the transfer to the USB drive.
5. Mantenimentu
Una manutenzione regulare assicura prestazioni ottimali è longevità di u vostru dispositivu.
- Pulizia di u sensore: Gently wipe the fingerprint sensor with a soft, dry, lint-free cloth. Avoid using abrasive materials or liquid cleaners directly on the sensor.
- Pulizia di u dispusitivu: Aduprà un soft, ligeramente damp cloth to clean the exterior of the device. Do not allow water or cleaning solutions to enter the device.
- Backup di dati: Regularly back up attendance data to an external storage device (USB) or through the network software to prevent data loss.
- Actualizazioni di u 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. Risoluzione di prublemi
Questa sezione tratta di prublemi cumuni chì pudete scuntrà.
- U dispositivu ùn si accende micca:
- Assicuratevi chì l'adattatore di corrente sia cunnessu currettamente à u dispusitivu è à una presa elettrica funzionale.
- Verificate chì a presa di corrente funziona cunnettendu un altru apparechju.
- Impronta digitale micca ricunnisciuta:
- Assicuratevi chì u ditu sia pulitu è asciuttu.
- 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 (per esempiu, FAT32).
- Try a different USB flash drive.
- Verify there is sufficient space on the USB drive.
Sè avete prublemi chì ùn sò micca trattati quì, vi pregu di cunsultà a sezzione di supportu.
7. Specificazioni
| Mudellu | KartString Biomax K 21 |
| Marca | eSSL |
| Sensore di impronte digitali | Sensore otticu |
| Capacità di transazzione | 100,000 records |
| Mostra | 2.8 Inch Color TFT |
| A cumunicazione | TCP/IP, USB-host |
| Dimensioni (L x W x H) | 183 x 45 x 138 mm (circa) |
| Pesu di l'articulu | 650 g |
| Culore | Neru |
8. Garanzia è Support
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 websitu o nantu à l'imballu di u vostru pruduttu.
When contacting support, please have your product model (KartString Biomax K 21) and any relevant purchase details ready.





