Centralized Access Control

Combined with a Suprema Device, DM-20 provides the ability to design and implement a centralized access control system with up to 32 doors and up to 8 biometric devices through daisy chain configuration.


Learn more about the different configurations via Application Note>

Key Highlights

  • Secure data transmission due to encrypted communication
  • Control up to four doors through multiple inputs and outputs
  • Easily monitor device status with 4 additional supervised inputs
  • Provides the ability to implement Centralized Access Control using a Suprema device



Interface Communication RS-485  
  Inputs TTL Input x 4
Supervised Input x 4
  Output TTL Output x 6  
Hardware Relay Form C x 4  
  Wiegand  In/Out x 2  
  Reader Power Output 750ma (12V) x 2  
  Power 12V  
  Operating Temperature -20°C to 60°C  
  Dimensions  120 x 70 x 36 mm (W x H x D)  

Compatible Devices

BioStation 2

BioLite Net

BioEntry W

Xpass S2

Secure I/O 2

BioEntry Plus


BioStation L2

BioStation A2

BioEntry W2

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