Product description For Compra Noise Noise protocol traffic lights with our popular Compra Noise Traffic light goes into the third round with new features proven traffic light function with noise protocol power and battery operation• proven traffic light function• New protocol function• Green Points for longer periods of silence• red points for frequent noisy• easy to use• Power and battery operationespecially in the first years of school are the concentration phases are short and the noise level is rising quickly. Save yourself the verbal warnings or criminal work: the specially developed Noise Traffic Light brings the necessary rest back into the class room! Warning - the traffic light stops! A green "Lachi" and a red "Weini": every child knows. The traffic light colors, combined with the faces, illustrate the noise level in the class room - if desired even with beep. Use the rotary control the acceptable room volume - if this is exceeded, the traffic light on yellow to red. Playful Learning children, their volume to control and to endeavor to be quiet - who wants a "Weini" the Noise protocol: green and red dots as a motivator! Newly added is the log function: The scale on the right side of the device to document the noise behavior based on red and green points. In order to get a green point, must be at least one minute the green "Lachi" is displayed. Up to six minutes rest can be adjusted. The red dots work on the frequency of the noise: jumps to red traffic light multiple, there is a "penalty point". You set how often the traffic light changes to red jump so that it must be a red dot. Also here is from one up to six times. At the end of the hour you have a log of the noise behavior of your class, e.g. in a reward system or result in the teaching of mathematics can be used. The battery operation makes you independent. This is the noise and traffic light is always ready to go anywhere. With the 4 strong adhesive magnet (sold separately) bring the noise traffic light comfortable to any metal surface. The LED lamps have an average life of approximately 100,000 hours of operation. Delivery includes a built-in battery charger. Batteries not included (please order separately). Requires 4 AA batteries (AA type LR6). Dimensions (B x H x T): 26 x 49.5 x 8 cm