Distance Between Readers - Gallagher T10 Installation Notes

Cable distance
Cable type
CAT 5e or
better**
BELDEN
9842**
(shielded)
SEC472
SEC4142
C303900/
C303901
Gallagher
HBUS Cable
* The matching of wire sizes to equivalent wire gauges are only approximate.
** Recommended cable types for optimal HBUS RS485 performance.
*** Tested with 13.6V at start of cable.
Notes:
• Shielded cable may reduce the obtainable cable length. Shielded cable should be
grounded at the Controller end only.
• If other cable types are used, operating distances and performance may be reduced
depending on the cable quality.
• HBUS allows up to 20 readers to be connected to a single cable. Each reader requires at
least 9 Vdc to function correctly. The cable length and the number of readers connected
will have an impact on the voltage at each reader.
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Distance between readers

The distance separating any two proximity readers must not be less than 200 mm (8 in) in all directions.
When mounting a proximity reader on an internal wall, check that any reader fixed to the other side of
the wall is not less than 200 mm (8 in) away.
200 mm
3E4288 Gallagher T10 Reader | Edition 11 | March 2023
Copyright © Gallagher Group Limited
Cable format*
4 twisted pair each 2 x
0.2 mm (24 AWG)
2
2 twisted pair each 2 x
0.2 mm (24 AWG)
2
4 x 0.2 mm Not
2
twisted pairs (24 AWG)
4 x 0.4 mm Not
2
twisted pairs (21 AWG)
2 Twisted pair each 2
x 0.4 mm (21 AWG,
2
Data) and 2 x 0.75 mm
2
Not Twisted Pair (~18
AWG, Power)
HBUS single Cardax IV
reader single reader
connected using connected using
data only in a data only in a
single cable single cable
500 m (1640 ft) 200 m (650 ft)
500 m (1640 ft) 200 m (650 ft)
400 m (1310 ft) 200 m (650 ft)
400 m (1310 ft) 200 m (650 ft)
500 m (1640 ft) 200 m (650 ft)
HBUS/CDX IV
single reader
connected using
power & data in
a single cable***
100 m (330 ft)
100 m (330 ft)
100 m (330 ft)
150 m (500 ft)
500 m (1640 ft)
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