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The Matrix – Wiring Pushbuttons to the TT33

Modular Button Assy.

Close up of TT33 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 ---

24 – 55 E56

56 – 87 E88

88 – 119 E120

For systems larger than 119 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 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 module, you can get 4x6 (24)

unique combinations. One of these combinations (D6) is

reserved for special functions, so you can have up to a total of

23 apartments using the TT33 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.

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 21 22 23

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