Open, setup and used once, then put back into boxes and scrapped. Will need some sort of wireless network tally system to send the tally command signals. These are the receivers. They can sit in the hot shoe of cameras. They do not utilize the power in the hot shoe. You can use the d-Tap, or the usb battery pack. I have three complete sets with two cords, and battery pack, dtap, and two straps. The remaining two will be listed later with a slightly different listing as I don’t have the last two split usb/3.5 cables. I believe they were programmed with Bluetooth if my memory is correct. Selling one at a time.
eBay