EXpert 4 Access Controller | TDSi
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EXpert 4


expert 4


This master 4 door controller is provided complete with power supply and RS-485 connectivity. Housed in a robust metal enclosure, EXpert⁴ is supplied complete with one EXpander² slave PCB pre-fitted for added convenience.


  • a Range of expansion and integration options for maximum flexibility
  • Capacity up to 36,000 cards - ideal for high volume applications
  • Stand-by battery facility allows the system to continue operating in the event of a power failure
  • Systems can be controlled without the need for a host PC
  • A flexible and scalable access controller
  • Master/ slave configurations allow great flexibility in system design and control


380 x 320 x 140 mm


7.2 kg

Operating environment

-5°C to +45°C, 0 to 95%RH (non-condensing)

Power supply

Input: 220 to 240 VAC, 80VA


12 VDC, 2 x 1A

Max cards

48000 when used in 2 door mode


Maximum of 2 using the majority of readers, keypads and biometric technologies including TDSi Microcard, EXprox®, Optica® and those with standard clock & data, Wiegand and HID standard 37-bit (H10302) output formats


1 or 2


8 in total; 2 used per installed door, the remaining free inputs for monitoring other equipment; can be increased with the use of eXin/eXout module


4 changeover relay outputs (30V, 2A contact rating) in total; 1 used per door for lock strike, the remaining free outputs for controlling other equipment; can be increased with the use of EXin/EXout module

Communications  ports

RS-232, RS-485, Ethernet (TCP/IP) with an in-built RS-485 converter for up to 30 downstream controllers (eXpert2 IP model only)

Product Overview

Download Product Datasheet

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