It can convert ambient sound into electrical signals, process data and displays results on LCD.
The sound level meter is compact and light weight, convenient to carry.
Polarized capacitance Microphone, Dynamic cahracteristics fast 125ms, Slow 1second
Equipped with sponge ball to filter-out unwanted signals. It also shows the bargraph
Clear LCD with backlight, convenience for night use.
Great tool for monitoring noise levels in hotels, conference halls, home theater, hospitals, and any other noise sensitive environments.

HT622B Digital Sound level Noise Meter

	HT622A	HT622B
Sound pressure accuracy	±1.5dB (94dB＠1KHz),±5dB (94dB＠8KHz)	±1.5dB (94dB＠1KHz),±5dB (94dB＠8KHz)
frequency response	30Hz — 8KHz	30Hz — 8KHz
dynamic range	50 dB	50 dB
measuring range	30—130dBA,35—130dBC	30—130dBA
Weighting properties	A /C	A
Dynamic characteristics	FAST 125ms, SLOW 1sec	FAST 125ms, SLOW 1sec
Microphone	Polarized capacitance microphone	Polarized capacitance microphone
Range	30—80dB,40—90dB,50—100dB,60—110dB,70—120dB,80—130dB	30—130dB

Bargraph	√	√
Auto/manual range	√
Under/Over range	UNDER/OVER	UNDER/OVER
Backlight	√	√
Data hold	√	√
MAX/MIN hold	√	√
Auto Power Off	√	√
Low battery indication	√	√



Power	3x1.5V AAA batteries
Weight
Size

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