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© MARMITEK
10
EXTRA POSSIBILITIES WITH YOUR
DOORGUARD 450
Connecting an electric door opener
To open the door from the monitor.
The camera will provide the power for the door-opener
You need an electric door opener of 8 to 12 V DC. (Marmitek art nr
09774).
Connect the door opener to the
Doorbell camera back
Connecting multiple monitors and
Doorbell Cameras
To be able to see who is at the door from several places (max. 4) and
where (max. 4) the doorbell rings.
DoorGuard 450 Extra monitor: art.no: 08134 (E version) 08139 (UK
version).
DoorGuard 450 extra doorbell Camera: art.nr: 08146
The 4-core cable that is supplied with the extra monitor and Doorbell
Camera is parallel connected to the other monitor’s/Doorbell Camera
connection points. A 3
rd
or 4
th
monitor/Doorbell Camera can be
connected to the nearest monitor/Doorbell Camera. The order does
not matter.
If you want to bridge a greater distance, then check out the following
table for the required cable type.
Cable length Required cable type
1-25m 4 core cable of minimum 4x 0,55mm
2
25-50m coax cable, 75 ohm of minimum 0,5mm
2
+ 2 wire
audio 0,35mm
2
50-100m coax cable, 75 ohm of minimum 1.0mm
2
+ 2 wire
audio 0,35mm
2
100-300m coax cable, 75 ohm of minimum 1.5mm
2
+ 2 wire
audio 0,5mm
2
10


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