Technical data
81/148
Before Mounting
© MOBOTIX AG • Security Vision Systems • Made in Germany
www.mobotix.com • sales@mobotix.com
2.2.7  Using MxBus Modules
The MxBus camera connector is located under the housing 
cover (clamps 5 and 6 of the screw clamps) and allows the 
operation of additional modules for expanding functionality 
(e.g.  connection of  an  MX-GPS-Box  for determining  time 
and position). MxBus was optimized specifically for the use 
of existing two-wire cables.
The terminal connector has two connectors to connect an 
MxBus module (other MxBus modules can then be connected 
from there). The length of the entire MxBus cable may not 
exceed 50m/55yd.
Note
The MxBus wires that are to be stripped at the end should always be fed into the 
camera through appropriate plugs before mounting. If 
the single wire plug is used, one wire must be pushed 
through a hole in the plug.
Do not mix up the polarity of the cables during installa-
tion. Select a consistent cable color for +/- in the entire 
MxBus system (for example, red = +, blue = –).
2.2.8  External Audio Support (Microphone/Speaker)
The camera connector for an external microphone and an 
external speaker is located under the housing cover (clamps 
1 and 2 of the screw clamps for microphone, clamps 3 and 
4 for speaker).
An external microphone (red box) and an external speaker 
(red box) with the following technical data can be connected 
on the terminal connector:
• 
Microphone
:  V
s
 =  2.0 V,  R
L
 =  2.2 kOhm,  sensitivity 
–35±4dB, for example, Panasonic Microphone Capsule WM61
• 
Speaker
: Max. power output 400mW at 8Ohms impedance, for example, Visaton 
Speaker K36WP or K50WP
Mic Speaker MxBus
Mic Speaker MxBus










