Pilot USA
Auto Shutoff Battery Box for DNC II, PA-1761, and PA-1771 ANR Headsets
This box is only to be used with Pilot ANR headsets that originally used the same box. This box will not work for older headsets that did not have auto shutoff and had a push on/off button rather than the toggle switch
NIB PilotUSA Battery Box for ANR Headsets Aviation Pilot