Smart Sensor AR844 Digital Sound Level Meter Noise Level Meter with Software 30~130dB 31.5HZ~8.5KHZ Hardness Testing Equipment *Low range resolution (µm): 0

*Low range resolution (µm): 0

*Power supply: two AA size alkaline batteries （Battery not included in the package） Working Conditions

Vickers (HV)

Range: Moisture 0~70%

Smart Sensor AR844 Digital Sound Level Meter Noise Level Meter with Software 30~130dB 31.5HZ~8.5KHZ Hardness Testing Equipment *Low range resolution (µm): 0Brand: Graigar Features: AR844 sound level meter can connect with the PC through USB, provides data record downloading, read time data sampling analysis, and printing graph & data function. Auto power off 10 minuteCalendar function Both AC and PWM signal output are available4700 data record function Accuracy up to + 1. 5dBMeasurement range is 30 to 130dB High low speed rate selection Part Number: AR844 Details: Color: White Material: ABS Plastic