Features

■Allows automatic, manual or remote control of sound system levels.

■It has an SPL meter with over 50 dB range built in.

■The microphone can be placed up to 5000 feet from unit.

■Simplicity in set up and operation.

■Single rack space - 1 RU.

■Balanced 600 ohm inputs and outputs.

■Line input activated by a contact closure.

■Loop start TELCO input with priority over line input.

■Clock inputs or remote control connections.

■Relay outputs for emergency override or indicators.

■Line output and a contact closure to supervise downstream equipment.

■Internal microprocessor senses ambient noise via a microphone input, and adjusts the paging level accordingly.

■Rack or wall mount.

■UL listed power supply, FCC Part 15 approved.

Figure 1-1 shows a back view of the Ambient Level Controller (ALC) and Figure 1-2 shows a front view of the ALC. Figure 1-3 shows a block diagram of the ALC.