This smart air quality sensor accurately monitors CO2, PM2.5, VOC gases, temperature, and humidity to ensure a healthier indoor environment. Designed for HVAC systems, it supports WiFi control via the Tuya or Smart Life app. Ideal for smart automation of ventilation and fan control. Multiple display ranges and output channels allow intelligent operation for homes, offices, and industrial setups. Compatible with three-speed ventilators for efficient air regulation.
Key Features
Real-time CO2, PM2.5, VOC monitoring
Temp & humidity sensor included
Tuya / Smart Life App compatible
WiFi remote and manual control modes
Supports HVAC fan automation
Multiple output & control channels
Specifications
Brand: SHOJZJ
Model: 900
CO2 Range: 350–1999 ppm
PM2.5 Range: 0–500 µg/m³
Humidity Range: 5–99% RH
Temp Range: 0–99°C
Rated Voltage: AC 95–240V, 50Hz
App Support: Tuya / Smart Life
Communication: WiFi / RS485
Control Channels: 8
Output Interface: 3-speed ventilator
Certification: CE, RoHS
Parameter
Project
ProjectUnit
Parameter value
Power supply
VAC
95～240
CO2 Adjustment range
PPM
1～1000
CO2 Displayrange
PPM
0～1999
PM2.5 Adjustmentrange
μg/m
0-500
PM2.5 Display range
μg/m
0-500
VOC Adjustmentrange
PPM
0-5.0
VOC Display range
PPM
0-5.0
Sensor warm-up time
min
2
Response time
s
≤10
Temperature display range
℃
0～99
Humidity display range
%RH
5～90
Control power:
W
≤200
Rated Power
W
<2
Output Interface
3-speed fan
AC output，DC 0-10V Optional
Dimensions
MM
80×80×40mm/L×H×D
Wirings
MM2
2 x 1.5 or 1 x 2.5
Install hole spacing
MM/In
60±5MM/2.36±0.2In
Protection Class
IP
30
Flame retardant rating
Level
V0
Scientists study summary!
CO2 concentration and human physiological response:
1.350 ~ 450ppm: general outdoor environment;
2.350 ~ 1000ppm: fresh air, smooth breathing;
3.1000~ 2000ppm: The human body feels turbid air and begins to feel drowsy;
4.2000~ 5000ppm: Feeling headache, lethargy, sluggishness, inabillty to
concentrate, rapid heartbeat, mild nausea;
5. Greater than 5000 ppm: May cause severe hypoxia, causing permanent
brain damage, coma, and even death.
The main source of CO2 in the room is human activity An adult exhales about
22.6 L/CO2 while sitting or lying quietly, and the amount of exhales for children
is about half that of adults.
through the relay to control the start and stop of the output AC fan and valve intelligent ventilation system controller of PM2.5, CO2, VOC, temperature, humidity and other sensors. The output signal of the controller directly controls the start and speed of the fresh air blower, and the design of high-sensitivity touch buttons
to effectively improve air quality and create a healthy, comfortable and energy-saving living and working environment
Can be widely used in residential, commercial and industrialProduct Display：
Basic version：
WIFI version :
Scalable modules:（Note: It takes five days to customize the product）
Item Type:Particle Concentration Sensor
Model:PM-G7
Detectable Gas Type: PM2.5
Effective Range: 0-500μg/m³
Maximum Range: 1000μg/m³
Particle Mass Concentration Resolution: 1μg/m³
Minimum Resolution Particle Size: 0.3μm
Accuracy: 10%
Response Time: ≤3s
Data Interface: UART@3.3V
Working Current: ≤100mA
Output Type: Serial Port
Working Temperature: 50 (°C)
Power Supply Voltage: 5V (4.8-5.5V)
Shell Material: Iron
Size:48 x 37 x 12mm / 1.89 x 1.46 x 0.47in
Color
Enhanced version CO2, WIFI PM2.5 CO2, CO2, WIFI PM2.5
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Scientists study summary!
to effectively improve air quality and create a healthy, comfortable and energy-saving living and working environment
Can be widely used in residential, commercial and industrial
Product Display：
Basic version：
WIFI version :
Scalable modules:（Note: It takes five days to customize the product）
Reviews
There are no reviews yet.