Bosch LBB4443-00 End Of Line Supervision Board None

The board monitors the integrity of a loudspeaker line. The boards work together with the LBB 4440/00 Supervision Control Board to monitor the status of the loudspeaker line and all of its branches. The line status is communicated to the LBB 4440/00 via the existing loudspeaker cable. Loudspeaker line monitoring without additional cabling Open-circuit fault detection Compatible with 100 V and 70 V loudspeaker lines Powering of the supervision-board from the power amplifier Communication is not affected by the audio signals on the line