Telex Audiocom WM1000 User Instructions page 19

Wall mount intercom stations

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Intercom Channel, Unbalanced Mode (SW1 set to UNBAL position)

Output Level: 1 Vrms ±10%

Input Impedance: 150 ohms

Bridging Impedance: greater than 10,000 ohms

Call Signaling:

Send: 11 ±3 VDC

Receive: 4 VDC minimum

Connector Type: Six-position terminal block with screw-in wire clamps

Pin 1

Common

Pin 2

Local power (12 to 15 VDC, 65 to 150 mA)

Pin 3

Channel 1 +24 VDC input

Pin 4

Channel 1 Intercom audio high and DC call

Pin 5

Channel 2 +24 VDC input

Pin 6

Channel 2 Intercom audio high and DC call

1 9

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Audiocom wm2000