13
The Matrix – Wiring Pushbuttons to the TT33-2
Modular Button Assy.
Close up of TT33-2 Matrix Connections
The matrix consists of Common Connections
a,b,c,
&
d
and numbers
1
through
6.
Apartment
Connections
101
A
1
102 A 2
103 A 3
104 A 4
201 A 5
202 A 6
203 B 1
204 B 2
301 B 3
302 B 4
303 B 5
304 B 6
PH1 C 1
PH2 C 2
PH3 C 3
# of Apartments
Additional
Components
1 – 23 or 24
---
24 – 55 or 56
1 - E32
56 – 87 or 88
2 - E32
88 – 119 or 120
3 - E32
For systems larger than 120 apartments, contact Alpha Communications® for assistance.
When using an STR™ Modular Button assembly, the system can
read which switch is being pressed by electronics built into the
switches.
In the case of a Custom Panel, these electronics are built into the
TT33-2 and you must run wires to assign each button to a position
in a matrix.
The chart to the left shows an example of how a 15 button
panel could be connected using combinations of letters and
numbers to give each button a unique identification in the
electronic matrix.
As long as each button is connected to a unique combination
of one letter and one number then the system will be able to
assign addresses to each button.
Using the matrix on the TT33-2 module, you can get 4x6 (24)
unique combinations. One of these combinations (DL) can be
used for special functions, so you can have up to a total of 23
or 24 apartments using the TT33-2 alone. If your system has
more apartments you may add the following parts (one for
each entry) which will extend the matrix by giving you more
numeric connections. Please refer to the chart below.
