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The Bogen Communications TWK351 2-Wire Adapter Kit is used in instances where there is existing 2-conductor shielded wiring when installing the Pi35a or Si35a PA amplifiers. The two-wire adapter elliminates the need for a three-annunciator call-in signaler.
In the Box
Bogen Communications TWK351 2-Wire Adapter Kit for Pi35a and Si35a PA Systems