Features:
☞The use of high-speed microprocessor chips makes the instrument more stable and reliable. ☞The instrument is designed according to EU CE safety standards and complies with ROHS/REACH and other environmental certifications.
☞The instrument has automatic range switching, analog bar display, A/C frequency weighting mode selection, and dynamic feature speed selection.
☞Over-range indication, data retention, backlight illumination, low voltage indication, maximum and minimum, etc.
☞Conforms to International Commission IEC 651 Type 2 and American National Standard ANSI S1.4 Type 2

Specification:
Acoustic Jade Accuracy: Soil 1.5dB (Sound Pressure Standard, 94dB@) 1KH2)
Lu pressure accuracy: Earth 5dB (sound pressure standard, 94dB @) 8KHz)
Sound pressure Frequency response: 30HZ 8KHZ.
Sound pressure dynamic clearing: 50dB (per one measurement position).
Lu pressure measurement flower Wai: 30-130dBA.35-130dBC.
Sound pressure frequency weighting characteristics: A and C characteristics.
Sound pressure dynamics: FAST125ms,SLOW1sec
Microphone: Polarized condenser microphone.
Display: 4 digits, resolution 0.1 dB, sample rate 2 times/second.
The analog bar shows: The sampling rate is 20 times/sec.
Measured positions: 30-80 dB, 40--90 dB. 50-100 decibels. 60-110 minutes. 70--120 dB, 80--130 dB. Total 6 Gears.
Automatic shifting: The microcomputer automatically selects the best measurement within the range of 30 to 130 dB Gears. Lower or greater than the limit indicates "UNDER" and "OVER", characters are indicated.
Power Supply: Four 1.5V7 batteries.(not include)
Operating temperature 0 ~ +40C.
For wet change: 10~80%RH.
Storage temperature: -10 ~-+60C.
Storage humidity: 10~70%RH.
Dimensions: 193(L) x 60(W) x 29(H)mm.

Packing include:
1*LCD Digital Audio Decibel Meter
1*manual