Decibel Meter Wall Hanging Sound Level Tester 30 130db Mounted Noise Measuring with Alarm,Digital Large Screen Red LCD for Home, Factory, Classroom

【High Precision】This sound level meter uses a condenser microphone sensor to test decibel values, which is more sensitive, accurate and stable. Measurement range 30 to 130dB, accuracy ±1.5dB, and the frequency response range is 31.5Hz to 8.5KHz. Fast time response 【Widely Used】This noise monitor is an excellent tool to check, monitor or control and test any environmental sound level, and can be used in noise engineering, product quality control, health prevention and treatment, etc. The large LED display decibel meter can be hung on the wall or placed on the table. 【Large LCD Display and Wall Mounted】The digital sound level meter is equipped with a 9.6" (243.8mm) HD backlit LED display, so you easily read decibel levels in real time. Unlike hand-held sound level meters, the T4-SW525A sound level meter can be hung on a wall or placed on a table. The wall-mounted dB meter is simple to install and ideal for continuous monitoring 【Alarm Function】The instrument is enabled with the alarm function by default. When the measured value exceeds the alarm value, the instrument will beep and flash for 2 minutes to lock the data. You can set the low and high decibel alarm range of the noise sound alarm system, adjustable alarm time range:6s to 120s, alarm sound size in 3 levels 1 to 3, 3 is the maximum sound. Alarm output port, can be used for external speakers. (Note: This product does not come with a factory speaker) 【A wide range of applications】It is an ideal noise meter for testing the sound level of the classroom. It is widely used in offices, roads, homes, stereos, main traffic routes, factories, construction sites, housing, etc