Tyco DIU 200 Manuel D’Utilisation

The Compact Door Interface Unit (DIU 200) is designed primarily to provide power 
to a door lock, as well as local power to a CEM reader when a high level of security 
is required. It has onboard inputs which can be used to monitor conditions such as 
a fire alarm or activated break-glass condition. 

The DIU 200 improves door security, by allowing the installer to locate lock 
controls on the secure side of a door, with an intelligent CEM reader on the 
unsecured side. The DIU 200 communicates with an intelligent CEM reader over 
a single pair RS485 cable.  Upon a valid swipe at the card reader, the reader 
will instruct the DIU (over the RS485 communications channel) to activate the 
appropriate output to release the lock using a coded data signal (i.e. coded lock).

As an added benefit, the DIU 200 monitors the status of all standard door 
monitoring inputs; inputs on an intelligent CEM reader are free for use as general 
purpose inputs.

DIU 200 Module

•  Door Interface Electronics

held on one board

•  Provides ‘coded lock’ serial

interface between door 
hardware and card reader

•  On site selectable for 12 or

24 volt lock output

•  Fire alarm and break glass

inputs for emergency door 
release

•  Designed for ease

of installation and 
maintenance using 2 part 
connectors throughout 

•  Compliant with EN55022

(emissions) and EN55024
(access control immunity) 

•  Backup battery connection

for emergency power 
(optional) 

DIU 200 Module

Compact Door Interface Unit

 

1. DIU Unit Enclosure
2. CEM Reader
3. Sounder
4. Break Glass Unit
5. REX/ Exit Reader or  

Secure side push button

6. Door Holder (via optional Backplane)
7. Door Lock
8. Lock Sense
9. Door Position sensor