Multiple composite processes, , drop-proof, dust-proof, waterproof Used to measure the sound level of audio equipment in work and life: such as factories, workshops, schools, residences, office areas, traffic roads, audio, office buildings, restaurants, schools, classrooms, libraries, etc. Precise measurement over-range measurement warning signs, there will be warning signs if the limit is exceeded Miniature condenser microphone sensor, accidental drop can also protect the sound head from normal use Excellent display quality, eye-friendly, low power consumption, low radiation., Manufacturer: CVJdfhRE