Wall-Mounted LCD Sound Level Meter — Digital Decibel Monitor 30-130dB, Accurate Readings

Wall-mounted digital noise meter with a large LCD for clear, easy-to-read numerical values. Simple to use — the unit is ready for operation immediately after power-up. Measurement range: 30 ~ 130dB, with both upper and lower limit alarms. The alarm timing is adjustable from 5~120 seconds (factory default of 120 seconds). Built-in alarm sound output: the device buzzes when the live reading reaches the preset alarm level, holds the displayed data for 5s, then returns to normal monitoring mode.