Photo: Night Vision Devices

Photo: Night Vision Devices

NVD-BNVD-SG UL features a "Tactical Monocular Cutoff," which turns off power to each channel of the binocular whenever a channel is rotated up out of the user's line of sight. This eliminates stray light emitting from the monocular eyepiece, which would reveal the user to anyone else on the battlefield. The BNVD-SG UL has an automatic system power cutoff whenever the BNVD is flipped up into the helmet-mounted stow position, and then powers back on when it is flipped back down.