This is a base station unit from Louroe Electronics, model AP-8TB / LE-323, designed for home audio use. It has multiple audio inputs, a built-in microphone for talkback to the remote speaker, and a 3.5mm headphone jack on the front panel. The unit contains an internal power supply for direct connection to 120 Vdc power sources and has a talkback power output of 1.5W @70V line. It also has an audio frequency response of 100 Hz to 10 kHz, an input sensitivity of 0.78Vrms from the remote mic, and a monitoring power output of 1.5W @8. The unit is black in color and weighs 8.5 lbs (3.9 kg).
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