Wall-Mounted Digital Sound Level Meter — Large LCD Decibel Noise Monitor 30~130dB with Alarm

Wall-mount digital sound level meter for reliable decibel monitoring with a large digital LCD that presents clear numeric readings for easy viewing. Simple plug-and-play operation means no setup is required — the unit is ready to use as soon as it powers on. Measurement range: 30 ~ 130dB, with both upper and lower limit alarm capability. Alarm timing is adjustable from 5~120 seconds (factory default 120 seconds). Built-in audible alarm output (buzzer) notifies you when the real-time measurement reaches the set alarm level; the device will hold the data for 5s and then resume normal monitoring.