Alertz® is a highly visual, noise alert/control system with a host of benefits and features designed to aid in the reduction of noise levels within classrooms, exam settings, hospitals, libraries, corridors and many other areas where noise is a problem.nnThe traffic light system allows quick response using either the lights, siren, or recordable voice announcements.nnAs noise levels increase, lights change from green (acceptable), to amber (noise level rising) to red (too noisy). nnThe adjustable sound level meter enables noise levels to be set from 50dB up to 110dB. A digital counter records the number of times the red light is activated, thus providing further support for a teacher.nnAlertz® is supplied with a remote control, is mains and/or battery powered, and can be table or wall mounted.nnSize: 38 x 12 x 8 cm