Reddit reviews Yacker Tracker Original by AGI - Traffic Light Sound Monitor

Unit plugs into AC 120 volt electrical outlet with included UL approved transformer (Input: 100-240V AC 50-60Hz, Output: 9V DC 500mA) or can be used with 6 AA alkaline batteries (sold seperately).Unit can be self-standing or wall-mounted.Traffic light is computerized with adjustable sound level meter.Red light counter registers each time the red light activates. Push reset button to reset counter to zero.Decibel sensitivity control can be set to operator's choice. Push button to devrease sensitivity. Also offers manual operation option of staying on a given light color. Option face stickers provided to add the element of emotion ot the lights. Green light stays lit until noise in room goes above set level (determined by user, green light is replaced with a flashing yellow light as a warning. When sound level reaches 15 dB above set level, the red light and siren are activated. Voice ("Queit Please" in 4 languages or your own recording) and siren otions. User has the option of turning sounds on or off. Delayed Alarm Function will sound when noise continues for more than 2 seconds.