Environment Noise Tester Industrial decibel meter Digital Sound Level Meter TC-666


Sound level meter 1PCS

Sponge ball 1PCS

Computer software disc 1PCS

USB connection cable 1PCS

AC output wire 1PCS

1.5V Alkline battery 4PCS

Instruction manual 1PCS

PP packing box 1PCS


1. Level range
2. calendar date (year, month, day)
3. The maximum value icon
4. Sound pressure level icon
5. Low battery indication
6. USB communication icon
7. Data recording icon
8. Data recording full indication
9. Measurement unit
10. frequency weighting A and C
11. Reading displaying area
12. Calendar clock (hour, minute, second)
13. Bar graph (1dB/1 bar graph)
14. Alarm symbol, if the reading is over the
maximum range, this symbol will display.
15. Slow time weighting (refers to respond speed)
16. Fast time weighting (refers to respond speed)
17. Alarm symbol, if the reading is under the
minimum range, this symbol will display

                      07         08

1  This unit was designed according to following standards:

a:International electrician committee standard:


b:US national standard: ANSI S1.4 TYPE2

2 Accuracy up to +/-1.5dB

3 Measurement range is 30 to 130dB

4 Fast/Slow Time weigting selection

5 Automatic backlight

6 The maximum value holding function

7 Auto power off 10 minutes

8 A/C Frequency weighting selection

9 Both AC and PWM signal output are available

10 Calendar function

11 4700 data record function

12 Connect with the PC through USB, provides data record

13 downloading, real-time data sampling analysis, and

  • printing graph&data functions.
  • Carbon dioxide concentration
  • Temperature
  • Humidity
  • Public places

The densely populated place such as meeting room, classroom, exhibition hall, hospitals, department stores, bars, hotel, air port, railway station and entertainment hall, etc. the carbon dioxide detector may be used for ventilation control and environment quality monitoring So, it is used to guarantee body health.

  • Agriculture

The carbon dioxide may be used for plant photosynthesis. Therefore, it is widely used for agriculture. The air fertilizer with proper concentration may improve output of agricultural crops. When the concentration of carbon dioxide is not sufficient, air fertilizer may be used. It will give great help for whether the vegetable growth or improvement of vegetable.

  • Animal husbandry

The air quality concerns healthy growth of animals. If the air is turbid for a long time and the concentration of carbon dioxide is high and ventilation is not provided, the animal will get ill or epidemic disease may burst out. Therefore, installation of carbon dioxide detector at livestock farm may prevent occurrence of animal epidemics.

  • Industry

The carbon dioxide detector is widely used in the Industry such as wastewater treatment, factory building, workshop, temperature, cleaning room, production safety and all types of Industries. Especially, it is very necessary to monitor the carbon dioxide in borehole operation. The carbon dioxide detector is used generally in metal processing, paper pulp and paper making, cleaning and solvent extraction as well as lower temperature cleaning and carbon dioxiderelevant Industry.

Temperature accuracy±3%
CO2 measurement range370-9999 PPM
Concentration Resolution1 PPM
Concentration Accuracy±3% of readings of ±40PPM
Temperature measurement range-20℃ ~ +60℃
Humidity measurement range0-99% RH
Dimension80*80*55 mm
BatteryBuilt-in 1500mAh lithium battery
Power supply5V/ USB
Working time≥8 hours
Humidity accuracy±5% RH
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