Free sample for Carbon Monoxide Detector - EM21 Embedded Indoor Air Quality Monitor – Tongdy
Free sample for Carbon Monoxide Detector - 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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Our well-equipped facilities and great excellent command throughout all stages of generation enables us to guarantee total customer fulfillment for Free sample for Carbon Monoxide Detector - EM21 Embedded Indoor Air Quality Monitor – Tongdy , The product will supply to all over the world, such as: Greek, Ukraine, Pakistan, With a team of experienced and knowledgeable personnel, our market covers South America, the USA, the Mid East, and North Africa. Many customers have become our friends after good cooperation with us. If you have the requirement for any of our products, please contact us now. We are looking forward to hearing from you soon.

We are old friends, the company's product quality has been always very good and this time the price is also very cheap.

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