UTC Fire and Security WIU-4 User Manual

Technical specifications 5
Technical specifications
For UL compliant installation notes, refer to “UL” on page 18.
Operating temp. range
-31
o
F to +150
o
F (-35
o
C to +66
o
C)
Relative humidity 5% to 95% (non-condensing)
Physical dimensions
(HxWxD)
3.1" x 2.5" x 0.644"
(78.74 mm x 63.50 mm x 16.35 mm)
Index of protection IP00
Input voltage range 9 to 16 VDC
Power consumption 40 mA @ 12 VDC (no reader attached)
Cable specifications
*
* UTC Fire & Security recommends using shielded cable for all installations.
Belden 8725 or equivalent, 20 AWG
minimum
Maximum cabling
distance
WIU-4 to micro:
**
WIU-4 to reader:
***
** WIU-4 to micro: The maximum cabling distance of 1,000 ft (304.8 meters) is influenced by wire
gauge, reader power requirements, and the 12 VDC level from the microcontroller.
*** WIU-4 to reader: The maximum cabling distance of 250 ft (76.20 meters) is influenced by wire
gauge, reader power requirements, minimum input voltage at the reader when using the 12 VDC
from the WIU-4 (originally from the micro), and the cabling between the WIU-4 and micro.
1000 ft (304.8 m) @ 12 VDC with 20 AWG
cable
250 ft (76.2 m) @ 12 VDC with 20 AWG cable
Note: Although the WIU4 can be installed up
to 250 ft from the door, it is recommended
that it be installed above the ceiling, close to
the door to minimize electrical interference.
Door strike relay
****
**** The life of the relay decreases as the current switched by the contacts is increased. Use low
current door strikes for high traffic doors to maximize the relay life. Use an external relay for high
current applications.
8.0 A @ 30 VDC maximum
Agency approvals FCC Class A part 15
CE
UL 294

UTC Fire and Security WIU-4 Specifications

General

Brand	UTC Fire and Security
Model	WIU-4
Category	Computer Hardware
Language	English