The Yacker Tracker Deluxe appears to be a traffic signal, but it actually signals too much noise. Select the appropriate sound level for any situation and let the Yacker Tracker be an audio-visual reminder when levels are too high. Comes with a remote for convenience; range for remote is up to 20 feet. Remote requires 2 AAA batteries, included. Equipped with long lasting LED lights, a 2-second delay before the siren sounds, and voice ("Quiet Please" in 4 languages or your own recording) or siren options. Includes 120V AC adapter and optional face stickers for the lights. Self-standing or wall-mountable.