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B1292 ProTalk Expander


When additional alarm inputs are required for the ProTalk Plus, the B1292 is an economical choice. Housed in a compact 3.4" x 5.5" metal case, the ProTalk Expander simply connects with a short communication cable. Up to 7 Expanders can be daisy chained together, providing a total of 64 inputs and 32 outputs.


  • Provides 8 alarm inputs and 4 relay outputs
  • LED indicators and removable terminal blocks allow for easy setup and quick installation
  • Fully compatable with older ProTalk units



  • Coaxial cable connection between master unit and first expander
  • Each additional expander connects in a daisy-chain manner

Alarm Inputs

  • 8, optically isolated, 2 mA to operate. Ground closure causes voice and signaling transmissions
  • Plug-in screw terminal block accepts AWG 26 to 12 wire

Control Outputs

  • 4 independent Form C outputs controlled by programmable DTMF codes
  • On/Off or timed modes
  • 1 A at 30 VDC each
  • Plug-in screw terminal block accepts AWG 26 to 12 wire