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
❑LED Tri-colored lights
❑Visible air quality level
❑Compact and simple design
❑Gather real-time data and display history chart via a software platform
Show the detailed air quality on the screen
Display the real time values and 24-hour average of PM2.5, TVOCs, CO2
With on/off touch button to turn off /turn on screen
Specifications | CO2 | TVOC | PM2.5
|
Temp&RH
|
HCHO
|
sensor | NDIR | Metal oxide semiconductor | Laser particle sensor
Light scattering method |
High-precision digital integrated
Temperature and humidity sensor |
Electrochemical Formaldehyde sensors |
Measuring range |
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 reading
or 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/n RJ45 (Ethernet TCP) PoE power supply Optional |
Shell material and IP level | PC fireproof material
IP30 |
Operating
Environment |
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) |
❑View real-time and historical data through RS485 or cloud-based platform such as MyTongdy , in computer or mobile APP
❑Check out or download data to analyze your indoor air quality and identify the pollution source as frequently as you need
❑Handle your indoor air quality by control the fresh air system or purification equipment automatically
Widely used in commercial or residential spaces
No. | Model | PM2.5 | CO2 | Temp&RH | VOC | HCHO | Output | Display | Power Supply |
1 | EM21-B/S12C/D | · | · | RS485 |
B No display S with display |
C: 24VAC/VDC
D: 100~240VAC |
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2 | EM21-B/S13C/D | · | · | · | |||||
3 | EM21-B/S15C/D | · | · | · | |||||
4 | EM21-B/S17C/D | · | · | · | · | ||||
5 | EM21-B/S18C/D | · | · | · | · | ||||
6 | EM21-B/S22C/D | · | · | WI-FI | |||||
7 | EM21-B/S23C/D | · | · | · | |||||
8 | EM21-B/S25C/D | · | · | · | |||||
9 | EM21-B/S27C/D | · | · | · | · | ||||
10 | EM21-B/S28C/D | · | · | · | · | ||||
11 | EM21-B/S32C/D | · | · | ||||||
12 | EM21-B/S33C/D | · | · | · | RJ45 Ethernet
(please contact our sales department for POE Power Supply) |
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13 | EM21-B/S35C/D | · | · | · | |||||
14 | EM21-B/S37C/D | · | · | · | · | ||||
15 | EM21-B/S38C/D | · | · | · | · |
We provide commercial air quality monitors
Including- indoor, in-duct, outdoor monitors
Help you build healthy indoor air quality
Address:Building 8, No.9, Dijing Rd., Haidian Dist., Beijing 100095, China
Website:www.tongdy.com
Email:info@tongdy.com
Phone:86 10 59738930