South Korean biometric security firm Suprema has introduced a new secure door control module designed to provide a secure connection to multiple peripherals from Suprema devices.The DM-20, which works with BioStar 2 – Suprema's biometric access control platform – can also be combined with any Suprema access control terminal and can function as a secure central controller.The module utilizes existing RS485 or Wiegand networks, and additional DM-20 units can be connected via a daisy chain configuration to support up to 32 doors in combination with Wiegand readers or Suprema devices.Each module features a RS485 connection, two wiegand in/out ports and up to four relay ports for a wide array of installation applications. The two Wiegand ports can be used to connect 3rd party readers that can be set up as doors within BioStar 2.The module supports four TTL inputs and an additional 4 supervised inputs that detect the voltage flow on the circuit and allow the system to monitor input devices.”DM-20 delivers ultimate flexibility to system designers and installers,” said Young S Moon, VP of Suprema. “Its functions expand the ability of Suprema terminals to accommodate mid to enterprise level access control needs, and enhance security by replacing the conventional systems with biometrics or smart reader controllers.”