The Desktop Type PM 2.5 Monitor provides real-time measurement of indoor particulate matter, including PM2.5 and PM10 concentrations, alongside temperature and humidity.

Note: All Tongdy monitors and controls ship direct from the factory. Please allow 10-15 business days for shipping and handling.

Its clear LCD shows current values and a one-hour moving average for accurate air quality assessment. The device features six backlight colors aligned with PM2.5 AQI standards, offering an intuitive visual indication of air pollution levels. Equipped with an optional RS485 Modbus RTU interface, it supports integration into building systems. Designed for flexible placement, it can be mounted o

The Desktop Type PM2.5 Monitor offers precise real-time tracking of indoor air quality by measuring PM2.5 and PM10 particulate matter concentrations, along with temperature and humidity levels. Its clear LCD screen displays both immediate readings and a one-hour moving average, enabling thorough assessment of fluctuating air conditions. The monitor features six backlight colors that correspond to PM2.5 AQI standards, providing an immediate and intuitive visual cue to the severity of particulate pollution. With an optional RS485 interface supporting Modbus RTU protocol, this device can be seamlessly integrated into existing building management systems for centralized monitoring. This makes the monitor an essential tool for continuous, expert-level air quality management in residential, commercial or industrial settings.

• Comprehensive Air Quality Tracking – Measures PM2.5, PM10, temperature and humidity for a full picture of indoor conditions.

• Clear, Easy-to-Read Display – LCD screen shows real-time data plus a one-hour moving average to capture trends in air quality.

• Instant Visual Alerts – Six backlight colors correspond to PM2.5 AQI standards, making pollution levels easy to understand at a glance.

• Smart System Integration – Optional RS485 Modbus RTU interface allows seamless connection with building management systems.

• Versatile Placement Options – Designed for both desktop use and wall mounting to suit any environment.

• Professional-Grade Performance – Delivers reliable, continuous monitoring for homes, offices and industrial spaces.
  

Specifications

Power supply	G03-PM2.5-300H: 5VDC with a power adaptor G03-PM2.5-340H: 24VAC/VDC
Work consumption	1.2W
Warm-up time	60s (first using or using again after a long-time power off)
Monitor parameters	PM2.5, air temperature, air relative humidity
LCD display	LCD six backlit, displays six levels of PM2.5 concentrations and one hour moving average value. Green:   Top Quality- Grade I Yellow:   Good Quality-Grade II Orange:  Mild level pollution -Grade III Red:     Medium level pollution Grade IV Purple:   Serious level pollution Grade V Maroon:  Severe pollution - Grade VI
Installation	Desktop-G03-PM2.5-300H Wall mounting-G03-PM2.5-340H
Storage condition	0℃~60℃/ 5~95%RH
Dimensions	85mm×130mm×36.5mm
Housing materials	PC+ABS materials
Net weight	198g
IP class	IP30
Temperature and Humidity Parameters
Temperature humidity sensor	Built-in high precision digital integrated temperature humidity sensor
Temperature measuring range	-20℃~50℃
Relative humidity measuring range	0~100%RH
Display resolution	Temperature:0.01℃            Humidity:0.01%RH
Accuracy	Temperature:<±0.5℃@30℃     Humidity:<±3.0%RH （20%~80%RH）
Stability	Temperature:<0.04℃ per year   Humidity:<0.5%RH per year
PM2.5 Parameters
Built-in sensor	Laser dust sensor
Sensor Type	Optical sensing with an IR LED and a photo-sensor
Measuring range	0~600μg∕m3
Display resolution	0.1μg∕m3
Measuring accuracy（1h average）	±10µg+10% of reading  @ 20℃~35℃，20%~80%RH
Working life	>5 years (avoid to close lampblack, dust, great light)
Stability	<10% measurement decline in five years
Option
RS485 interface	MODBUS protocol，38400bps

 

Downloads

Desktop PM 2.5 Particulate Monitor Datasheet