Bell System Speech Unit Model 51 - Image 1

Bell System Speech Unit Model 51

Bell System Power Supply
Bell System 900 Series 1 Way Audio Door Entry System
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Features

  • This unit is generally required as a replacement unit for older systems or for SPA panels above 10 buttons.
  • The unit provides two-way speech and has an individual volume control for both microphone and speaker.
  • This universal product can be powered from either 12V AC or 12V DC depending on the model of telephone used. 
  • Dimensions (mm): H 136 x W 81 x D 30
SKU: 51 Categories: ,

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