Bosch Plena Voice Alarm Keypad

LBB 1957/00

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The LBB 1957/00 Call Station Keypad is an extension to the LBB 1956/00 Plena Voice Alarm System Call Station that adds seven additional zone-select keys. It has the same stable metal base as the call station. In addition to tabletop use, the special design allows it to be neatly flush-mounted in desktops. 


  • Seven zone selection keys 
  • LED indications for zone selection 
  • Up to eight keypads can be connected together