ET-976 LED Indication 5 in 1 Multifunctional Various Environmental Measurement Instrument for Different Practical Applications

Sound Level

Applied Standard

IEC61672-1 CLASS2

Accuracy

±2.0dB

Display

4digts

Resolution

0.1dB

Frequency response

31.5Hz～8kHz

Measurement range

Auto：35dB～130dB

Frequency weighting

dBA

Time weighting

（SLOW）1

Microphone

1/2 inch Electric condenser microphone

Visual Led indication

3 color LED indication ( refer to color and sound level correspondence table in Part 7.1)

Buzzer alarm

Alarm 20s, stop 60s circularly (preset on,
can turn off manually)

Attention:

Hold the meter in hand or use the tripod to affix the meter in the desired location. The best measuring distance is 1~1.5m away from the microphone to the sound source.

Light

Measuring range

0 Lux～200K Lux, 0Fc～20KFc

Spectral response

CIE photopic（CIE human eye response curve）

Spectral accuracy

CIE Vλfunction f1’≦6%

Cosine response

f2’≦2%

Accuracy

±3.5% rdg±8dgts.(<10,000Lux)
±4.5% rdg±10dgts.(>10,000Lux)

Data update

2 times/sec

Photo detector

One silicon photo diode with filter

3 color LED alarm

Preset: <500Lux Green;
500-1000Lux: Yellow;
>1000Lux: Red;
Alarm value can be set by user

Buzzer alarm

Alarm 20s, stop 60s circularly (preset turn on,
can turn off manually)

Air velocity

Measuring range

0.5~30 m/s

1.75~105 km/h

98.4~5905 ft/min

0.97~58.3 knots

1.11~67.0 MPH

Resolution

0.1

0.1

1

0.1

0.1

Measuring range

150～9000 CMM

787～47244 CFM

Resolution

1

Accuracy

Reading ±3% ±0.3d

Sampling rate

2 times/sec

Area set

0.1～9999 CM²/0.1～9999 ㎡/0.1 ～9999ft²

Measurement units

m/s, km/h, ft/min, knots, Mph,

Air speed grade indication

Yes

3 color LED alarm

3 color LED indication ( refer to color and air speed correspondence table in Part 7.2)

Buzzer alarm

Alarm 20s, stop 60s circularly (preset on,
can turn off manually)

Temperature

Measurement range

-20℃ ～ 60℃/-4℉～140℉

Accuracy

±1.0℃/1.8℉

Measurement units

℃/℉

Resolution

0.1

Humidity

Measurement range

20～100%RH

Accuracy

35～80%RH:±5%RH，Others: ±7%RH

Resolution

0.1

Data update

1 time/sec

Maximum value

MAX

Minimum value

MIN

Average

Average value for the latest 10 times measuring

Data Hold

HOLD

Auto power off

Automatically power off after approx. 15 minutes  inactivity

Power supply

3*1.5V AA or USB cable with type C connect

Battery life

About 30 hours

Operating condition

-20～60℃/-4～140℉，10％RH～75％RH

Storage condition

-20～60℃/-4～140℉，10％RH～75％RH

Dimensions

242×68×30mm

Weight

292g