Check the listing for details. JK Audio Outerloop XLR M Intercom Belt Pack. Condition: Used. Listed at 329.99 USD. Used. Working condition Model Outerloop-M Headset 4-pin Male XLR, 5-pin Male XLR Outerloop™ functions as a wireless link to your intercom system. This universal belt pack provides connections for your existing 4-pin or 5-pin intercom headset, routing audio through your mobile device over a Bluetooth wireless connection. Use your mobile device to call into your intercom phone bridge, station phone coupler, or any phone-based intercom app such as Unity Intercom or Clear-Com® Agent-IC. In Phone mode, Outerloop pairs to your cell phone, notepad, or computer just like any other Bluetooth headset. In Headset mode, you can pair to another Outerloop or to a standard Bluetooth headset, providing a short range secure wireless point-to-point intercom.