Datavideo ITC-100SL Additional Beltpack for ITC-100 Intercom System is the same beltpack as the 4 that come included with the Datavideo ITC-100 intercom system. It can be used as a replacement or to expand the system. The ITC-100 intercom system supports up to 8 of these beltpacks in total.
The beltpack features a 5-pin XLR input for talkback, power, and tally, and 3.5mm and 2.5mm headphone jacks for standard or Motorola type headphones. It has call and talk buttons, volume control, and a bi-color tally light. You can use it over a 650 ft communication distance.