uses usb cable for power so you don't have to keep up with another adapter, but it doesnt hold a charge like one would expect of devices that use a usb cable.Set up is increincredibly simple. Just make sure your devices are on the same channel and plug in.Talk and call features work great. Voices are clear although there's a noticeable delay in transmission. The monitor feature is not great. The mic sensitivity is very low so you need to be right next to the intercom for it to pick up your voice. Also, it tends to drop the first couple seconds of transmission in this mode.
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