A great self-monitoring traffic light sound meter! This unique 17" traffic light is perfect for teachers to monitor noise levels in the classroom. The Yacker Tracker looks like a genuine stoplight and can stand on its own or be wall mounted.
Equipped with longer lasting LED lights eliminating the need for replacement bulbs. Features 2-second delay before the optional siren sounds preventing false alerts resulting from sudden noises. Acceptable levels of noise can be adjusted for quiet activities or louder for group work. Nursery schools with hearing impaired students can use the unit as a visual signal. Drama departments can incorporate this unit as a quiet signal to alert backstage cast members of inappropriate offstage noise. Other features include: voice ("Quiet Please") or siren options; Automatically or manually adjustable lights; Decibel sensitivity control (from 50dB to 110 dB); Self-standing or wall-mountable; Powered by a 120V AC adapter (Included) or 6 AA batteries, sold separately. Optional face stickers for lights. $69.99