S-BBS Installation Instructions
Section 300
v1.0
Issue 1 August 1990
DOOR BOX
The door box associated with a customer-provided electrical door opener is usually
mounted outside the building beside the front door.
By pressing a button on the door
box a visitor alerts the
erson inside the building who controls the door opener by
dialing an access code rom a programmed telephone.
P
1. Connecting the Door Box
CI
-.-JZa.chdoor..box.connects two wires to a 25-pair extension cable.
(See TABLE 2,
page 15) Choose the appropriate wire gauge from the table below:
-
-
TABLE 4. Wire Gauges
4;1
Wire Gauge
26 AWG,
24 AWG
22 AWG
MaximumRange
230
Feet
370 Feet
590
Feet
Resistance
20 a’ (Ohms)
20 a (Ohins)
20 s2 (Ohms)
Figure 14
24
EXTENSION
CONNECTOR\
To Next Page
Loading...
