Principle Introduction:
ZEHS04 is a diffusion type multi-in-one module, mounted with atmospheric monitoring module ZE12, to detect CO, SO2, NO2, and O3. It is also compatible to connect with dust sensor module, temperature and humidity sensor module externally.
With TTL or RS485 output, it is convenient to use and debug, which greatly shortens the user’s design and development cycle, and meets customers’ needs for different gas detection occasions.

Applications :
Urban atmospheric environmental monitoring;
Unorganized emissions of pollution monitoring at factory sites;
Portable instruments, air quality monitoring equipment, and smart home equipment.

Technical parameters :

Tips:For more parameter information, please refer to the latest manual provided by salesman.

Model	ZEHS04
Target Gas	CO, SO2, NO2, O3 (PM2.5, PM10, temperature and humidity expansion compatible)
Output	UART(3V TTL, 5V compatible), RS485
Working voltage	DV 9~24V
Response time	≤ 120S
Resume time	≤ 120S
Resolution	≤ 10ppb
Working Tem.	-20～50℃
Working Hum.	15~90% RH(no condensation)
Storage Tem.	-20～50℃
Lifespan	2 years(based on sensor lifespan)
Power consumption	≤ 1W
Size	10x12x6cm(Lx Wx H)

Reference Circuit :

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