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Manufacturing Companies for Home Air Testing - EM21 Embedded Indoor Air Quality Monitor – Tongdy Detail:
Real-time indoor air quality detection, single or combined measurement selection: PM2.5, CO2, TVOC, HCHO,Temperature and RH
3-color light indicates the range of the main measurement
Screen display optional
Technology Specifications
Specifications |
CO2 |
TVOC |
PM2.5 |
Temp&RH |
HCHO |
sensor |
NDIR |
Metal oxide semiconductor |
Laser particle sensorLight scattering method |
High-precision digital integratedTemperature and humidity sensor |
Electrochemical Formaldehyde sensors |
Measuringrange |
400~5,000ppm |
0~ 4.0mg∕㎥ |
0~500μg∕㎥ |
Temp:-20℃~60℃Humidity:0~99%RH |
0~0.6mg/m3 |
Output Resolution |
1ppm |
0.001mg∕㎥ |
1μg∕㎥ |
Temp:0.01℃ Humidity:0.01%RH |
0.001mg∕㎥ |
Accuracy |
±50ppm + 3% of readingor 75ppm |
<15% |
<15% |
Temp:±0.8℃ Humidity:±4.5%RH |
±0.005mg/㎥+5% of reading |
General Specifications |
Detection Parameters(max.) |
PM2.5;CO2;TVOC;Temp&RH;HCHO |
Power Supply |
24VAC/VDC±10%100~240VAC
|
Output (Optional) |
RS485 (Modbus RTU)WIFI @2.4 GHz 802.11b/g/nRJ45 (Ethernet TCP) PoE power supply Optional |
Shell material and IP level |
PC fireproof materialIP30 |
OperatingEnvironment |
Temp:-10~60℃Humidity︰0~99%RH |
Overall Dimension |
91.00mm*111.00mm*51.00mm |
Storage Condition |
0℃~50℃0~70%RH |
Installation standard |
Standard 86/50 pipe box (installation hole distance 60mm)American standard pipe box (installation hole distance 84mm) |
Product detail pictures:
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