Tyco DIU 220 Fascicule

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OVERVIEW
The DIU 220 (PoE Door Interface Unit) combines Ethernet communications and 
sufficient power to support a complete door set, including an In reader, Out reader and 
a standard 650mA maglock, over a single Cat5/6 cable. The DIU 220 eliminates the 
need to include a power supply unit (PSU) at the door and expense of providing mains 
power to the PSU.
The DIU 220 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 220 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 
220 communicates with an intelligent CEM reader via the readers slave communication 
channel. Upon a valid swipe at the card reader, the reader will instruct the DIU (over 
the 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 220 monitors the status of all standard door monitoring 
inputs; inputs on an intelligent CEM reader are free for use as general purpose inputs. 
The DIU 220 is supplied in a plastic enclosure complete with PoE backplane and an 
output for an additional door holder.
DIU 220
• Ethernet communications and 
power via a single Cat5/6 cable
• Eliminates to need to have mains 
power and a PSU at the door
• Provides local power for: 
In reader
Out reader
Maglock
Sounder
Door Holder
• 11.5V @ 1.6A power output*
• Door Interface Electronics held on 
one board
• Provides ‘coded lock’ interface 
between door hardware and  
card reader
• Fire alarm and break glass inputs 
for emergency door and holder 
release
• Weigand interface for 3rd party 
exit reader.
• Designed for ease of installation 
and maintenance using 2 part 
connectors throughout
• Compliant with EN55022 
(emissions) and EN55024 (access 
control immunity)
  
* 1.6A @ 23
o
C or 1.4A @55
o
C
FEATURES
DIU 220
Power over Ethernet Door Interface Unit