Cheapest Price Indoor Aqi Monitor - EM21 Embedded Indoor Air Quality Monitor – Tongdy

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Cheapest Price Indoor Aqi 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

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EM21 embedded installation Indoor Air Quality Monitor Simple and elegant type

❑LED Tri-colored lights
❑Visible air quality level
❑Compact and simple design
❑Gather real-time data and display history chart via a software platform

EM21 embedded installation Indoor Air Quality Monitor Screen display type

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

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Technology Specifications

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	91.00mm111.00mm51.00mm
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)

Understand your air quality at all times

❑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

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Application scenarios

Widely used in commercial or residential spaces

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Models Guide

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
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)
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

Tongdy Sensing Technology Corporation

Address:Building 8, No.9, Dijing Rd., Haidian Dist., Beijing 100095, China

Website:www.tongdy.com

Email:info@tongdy.com

Phone:86 10 59738930

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