User's Manual
2.4 GHz airMAX
®
 ac Bridge with 
400 mm RF Isolated Reflector
Model: PBE-2AC-400-ISO
Introduction
Thank you for purchasing the Ubiquiti Networks® 
PowerBeam®ac. This Quick Start Guide is designed to guide 
you through installation and includes warranty terms.
Package Contents
Reflector Radome Antenna 
Feed
Rear Housing
Mounting Bracket Adjustment Bracket Pole Clamp
Hex Bolts with Washers 
(M8x20, Qty. 4)
Flange Nuts 
(M8, Qty. 2)
Carriage Bolts 
(M8x135, Qty. 2) 
ISO
5 GHz airMAX
®
 ac Bridge with 
400 mm RF Isolated Reflector
Model: PBE-5AC-400-ISO
Gigabit PoE (24V, 0.5A)  
with Mounting Bracket
Power Cord Quick Start Guide
TERMS OF USE: Ubiquiti radio devices must be professionally installed. Shielded Ethernet 
cable and earth grounding must be used as conditions of product warranty. TOUGHCable
™
 is 
designed for outdoor installations. It is the customer’s responsibility to follow local country 
regulations, including operation within legal frequency channels, output power, and Dynamic 
Frequency Selection (DFS) requirements.
Hardware Overview
Bottom View
Technology
Cable Door
Rear Housing
Antenna Feed
Ethernet Port
Release Button Slot
Mounting Bracket
Release Button
Reflector
Alignment Pins
Reset Button
Radome
Reset Button  To reset to factory defaults, press and hold the 
Reset button for more than 10 seconds while the PowerBeam 
is already poweredon. Alternatively, the PowerBeam may be 
reset remotely via a Reset button located on the bottom of the 
Gigabit PoE adapter.
Release Button  After you assemble the PowerBeam, check 
the Release button; it should be fully engaged in the Release 
Button Slot of the Rear Housing. This ensures that the Antenna 
Feed is locked into place. If you need to remove the Antenna 
Feed, you must depress the Release button first.
LEDs
Signal  In airOS, you can modify the wireless signal 
strength threshold values for each LED on the 
Wireless tab under Signal LED Thresholds. The default 
values are shown below:
LED will light blue when the wireless signal 
strength is above -65 dBm.
LED will light blue when the wireless signal 
strength is above -73 dBm.
LED will light blue when the wireless signal 
strength is above -80 dBm.
LED will light blue when the wireless signal 
strength is above -94 dBm.
Ethernet  The Ethernet LED will light steady blue 
when an active Ethernet connection is made and 
flash when there is activity.
Power  The Power LED will light blue when the 
device is connected to a power source.
Application Examples
The PowerBeam mounted outdoors with the Reflector 
installed provides directional outdoor coverage (gain is 
reflector‑dependent).
The PowerBeam mounted outdoors without the Reflector 
installed provides outdoor‑to‑indoor coverage using the 3 dBi 
Antenna Feed only.
Installation Requirements
•  13 mm wrench
•  Shielded Category 5 (or above) cabling should be used for 
all wired Ethernet connections and should be grounded 
through the AC ground of the PoE.
We recommend that you protect your networks from the 
most brutal environments and devastating ESD attacks 
with industrial‑grade shielded Ethernet cable from Ubiquiti 
Networks. For more details, visit www.ubnt.com/toughcable
Installation
1.  Align and insert the tabs of the Mounting Bracket into 
the slots of the Reflector. Rotate the Mounting Bracket 
counterclockwise until the alignment holes in the dish and 
bracket align with each other.
2.  (Optional) For additional support, insert four M4 screws 
(not included) into the holes in the Reflector and Mounting 
Bracket and secure each screw with two washers and a nut 
(not included).
Mounting 
Bracket
Reflector
3.  Line up the Alignment Pins of the Rear Housing with the 
alignment holes of the Mounting Bracket. Push the Rear 
Housing into the Mounting Bracket.
4.  View the Reflector from the front. Ensure that the three 
hooks (indicated below) of the Rear Housing are fully 
engaged with the inner wall of the Reflector and locked 
into place.
Important: Before proceeding, lightly pull the Rear 
Housing to confirm that it is locked into place. 
5.  Push in the sides of the Cable Door and detach it from the 
Rear Housing.
6.  Attach the Antenna Feed.
a.  Insert the Antenna Feed into the Rear Housing, and push 
until it locks into place with a click.
b.  Lightly pull the Antenna Feed to ensure that it is locked 
into place and the Release Button is fully engaged.
Release 
Button
Bottom View
7.  Connect an Ethernet cable to the Ethernet Port of the 
Antenna Feed. Then re-attach the Cable Door to the 
RearHousing.
8.  Attach the Pole Clamp to the Adjustment Bracket.
a.  Hold the Adjustment Bracket with the clamps facing you 
and the Elevation Indicators towards the top.
b.  Insert the Carriage Bolts through the holes of the 
Adjustment Bracket.
c.  Slide the hole of the Pole Clamp over one bolt of the 
Adjustment Bracket.
d.  Place one Flange Nut on each bolt. 
Elevation 
Indicator
9.  Insert the Pivot Pins on the inside of the Adjustment Bracket 
into the Mounting Bracket Slots.
Pivot Pin
(one on each side of
Adjustment Bracket)
Mounting  
Bracket 
Slot
10. Secure the Adjustment Bracket to the Mounting Bracket 
using the four Hex Bolts with Washers.
11. Position the reflector assembly on the pole and secure it.
a.  Place the Adjustment Bracket against the pole. 
b.  Slide the slot of the Pole Clamp over the Carriage Bolt.
c.  Tighten the Flange Nuts of the bolts to 25 N-m to secure 
the antenna to the pole.
25 N-m
Note: The mounting assembly can accommodate a 
Ø 40 - 80 mm pole.
12. Align the Notch on the Reflector with the Arrow at the top 
of the Radome. Guide the Radome’s side and top tabs over 
the Reflector rim and slide the Radome down onto the 
Reflector.
Arrow
Notch
Radome 
Side Tab
Reflector 
Rim
Radome 
Side Tab
Radome 
Top Tab
13. Snap the bottom three tabs of the Radome over the 
Reflector rim.
Bottom 
Tabs
14. Adjust the elevation angle.
a.  Loosen the four Hex Bolts on both sides of the antenna.
b.  Pivot the antenna until the Elevation Indicator shows 
the desired elevation angle.
c.  Tighten the four Hex Bolts.
20
Elevation 
Indicator
*640-00223-01*
640-00223-01
15. Connect the Ethernet cable from the PowerBeam’s Ethernet 
port to the POE port of the Gigabit PoE adapter.
16. Connect an Ethernet cable from your LAN to the adapter’s 
LAN port. 
17. Connect the Power Cord to the adapter’s power port. 
Connect the other end of the Power Cord to a power outlet.
Mounting the PoE Adapter (Optional)
1.  Remove the PoE Mounting Bracket from the adapter, place 
the bracket at the desired location, and mark the two holes. 
2.  Pre-drill the holes if necessary, and secure the bracket 
using two fasteners (not included).
3.  Align the adapter’s slots with the tabs of the PoE Mounting 
Bracket, and then slide the adapterdown.
PBE-2AC-400-ISO_QSG_V01_10-30-15.indd (2.75 x 4.5) -- Spread 1 of 2 -- Fri Oct 30 2015 12:41:36 -- NUpConsecutive
PBE-2AC-400-ISO_QSG_V01_10-30-15.indd (2.75 x 4.5) -- Spread 1 of 2 -- Fri Oct 30 2015 12:41:36 -- NUpConsecutive


