NU-831 is a NIDEKA slave device of an access control system. It has two verification modes which are Fingerprint and EM/Mifare Card.

An access control device used as a slave device is work together with another access control device used as a master device. NU-831 can be used with other access control to establish a higher security level environment for the organization.


  • Slave Device
  • Work with another Access Control Device

Additional information



Verification Modes

EM / Mifare, Fingerprint


RS485, Wiegand IN & OUT (26 & 34)

Power Supply

DC 12V, DC 9V

Operating Temperature

-10°C – 60°C

Operating Humidity

20% – 80%


130 x 88 x 38mm

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Union Business Machines Co., Ltd (Hong Kong)

Unit 3, 2/F., Block A, Hong Kong Industrial Centre, 489-491 Castle Peak Road, Kowloon, Hong Kong

Tel: (+852) 2745 1342

Fax: (+852) 2786 4647

Email:  [email protected]