CENS Digital Shooters Detail Specification CENS and CENS Digital are custom-made electronic noise suppressors for shooters. Being custom-made they fit exactly into the user's ear, ensuring an extremely comfortable fit over long durations. Each device will allow the user to hear all environmental sounds, including the gun being fired, but the sound in the ear will be kept to a safe level, providing a natural and comfortable sound experience. The memory selection button on the CENS Digital sets the first memory for game shooting and the second for clay shoots.