Server access control and security for mission critical operating environments

db Zero-U access control solution delivers physical access control to mission critical IT rack cabinets within data centers/colocation, military, government, educational, healthcare and industrial environments. For smaller or disributed installations, the db Zero-U offers the db ServerRack access controller, a networked solution with a complete reader/controller combination. An authorized user initiates cabinet access by scanning a fingerprint on the locking swinghandlle’s biometric reader. Access is granted by an inside-cabinet lock controller. Suitable for both new cabinets and as a retrofit to existing cabinets.

FEATURES - db ServerRack...

Two configuration options:

  • A single fingerprint sensor can provide simultaneous access to front and rear door of the cabinet.
  • Separate fingerprint sensors on the front and rear cabinet doors, providing independent access to each door.
  • Status LEDS on the front of the control unit
  • Integrated electromechanical cabinet lock
  • Up to 8 external sensors to monitor cabinet doors, locks and panels
  • RJ45 connector for networking


  • Enrollment Time: < 5 seconds
  • Identification Time (1-N): < 1 second/1,000 users
  • EER Rate: < 0.1%
  • Security Levels: 3

Enrollment and Monitoring

  • Done via Digitus DAS-SQL Software


  • Protocol: TCP/IP over Ethernet
  • Inputs: 2 Door Sensors, 2 Lock Sensors, 4 Tamper Switches
  • Outputs: 2 Door Lock Relays, Alarm Relay, 26-bit Wiegand

Memory Storage

  • User Capacity: 9,500
  • Template Size: 384 bytes
  • Log Capacity: 60,000 events

Technical Specifications

  • Control Unit Dimensions: W17 x D8 x H1 3/4 for 1U
  • Control Unit Dimensions: W7 1/2 x D5 x H1 1/4 for Zero-U
  • Lock Dimensions: Fits most 25 x 150 mm opening
  • Voltage: 18-22v DC
  • Current Draw: Idle-520 mA; Max 650 mA (without lock)
  • Operative Temperature: 32ºF-158ºF (05ºC-70º3C)

User Interface

  • Finger Sensor: Capacitive with Fake Detection
  • LED Indication: Tri-Color
  • Lock Status LED