Sound level meter with an integrated acoustic traffic light, offers precise and reliable sound measurements in real-time. Equipped with a large 3-color LCD display, it provides an immediate visual indication of the current sound level. The green, orange, and red colors signal whether the noise level is acceptable or if action is needed. The device includes a customizable acoustic alarm in six languages, facilitating use in various international contexts. The adjustment of threshold values allows adapting the optical and acoustic alarms to local regulations. With an integrated memory capable of recording 15 seconds of audio and an audio output for external processing, the sound level meter operates both on battery and mains power. An infrared remote control allows managing key functions remotely, making the device practical in hard-to-reach environments. Designed to be placed on a table or mounted on a wall, this sound level meter is ideal for schools, nurseries, and conference rooms, thanks to its versatility and innovative features.