3. Measurement range is 30 - 130dB. With upper and lower limit alarms. 1. Large digital LCD display, clear numerical values, easy to read. 4. The adjustable range of alarm time is 5-120 seconds (factory default of 120 seconds). 2. It is easy to operate and does not require any settings. It can be used immediately upon startup. 5. Alarm sound output function. Buzzing to remind you when the real time measurement is reach to the alarm level, and hold the data for 5s then back to normal mode., Weight: 1.33930824165 pounds, Manufacturer: Wesafrae
3. Measurement range is 30 - 130dB. With upper and lower limit alarms. 1. Large digital LCD display, clear numerical values, easy to read. 4. The adjustable range of alarm time is 5-120 seconds (factory default of 120 seconds). 2. It is easy to operate and does not require any settings. It can be used immediately upon startup. 5. Alarm sound output function. Buzzing to remind you when the real time measurement is reach to the alarm level, and hold the data for 5s then back to normal mode., Weight: 1.33930824165 pounds, Manufacturer: Wesafrae
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