New Delivery for Pm2.5 Air Monitor - EM21 Embedded Indoor Air Quality Monitor – Tongdy
New Delivery for Pm2.5 Air Monitor - 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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We're commitment to offer you the aggressive cost ,superb products and solutions top quality, too as fast delivery for New Delivery for Pm2.5 Air Monitor - EM21 Embedded Indoor Air Quality Monitor – Tongdy , The product will supply to all over the world, such as: California, Mexico, Bangladesh, Look forward to the future, we will focus more on the brand building and promotion . And in the process of our brand global strategic layout we welcome more and more partners join us, work together with us based on mutual benefit. Let's develop market by fully utilizing our comprehensive advantages and strive for building.

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