Indoor Air Quality Sensors & Solutions
for Offices, Schools, Hospitals and More

Helping You Create Cleaner Air,
Better Comfort, and Sustainable Buildings

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Comprehensive IAQ Solution for Healthier and Smarter Buildings

Milesight delivers a comprehensive Indoor Air Quality (IAQ) solution that goes beyond simple sensing. Poor IAQ, fragmented HVAC and Building Automation Systems (BAS), high energy costs, and rising compliance demands are common challenges for modern buildings. Our solution seamlessly integrates advanced IAQ sensors, LoRaWAN® gateways, controllers, thermostats, and the BAS into one ecosystem — enabling real-time monitoring, smart analytics, and automated climate control. With Milesight IAQ Solution, we enable you to transform indoor environments into healthier, safer, and more energy-efficient spaces.

iaq solution topoly
  • Healthier & Safer Spaces:

    Continuously maintain optimal IAQ levels for better occupant well-being.

  • Smarter Energy Use:

    Automate HVAC control based on occupancy, saving up to 30% in energy costs.

  • Actionable Insights:

    Visualize real-time IAQ data and receive instant alerts.

  • Sustainability & Compliance:

    Simplify the path to WELL, LEED and other building certifications.

Indoor Air Pollutants, Environment, and Comfort Factors —All Monitored by Our IAQ Sensors

Breathe easier with Milesight IAQ sensors. Our devices continuously monitor critical indoor air factors — including CO2, PM2.5, PM10, TVOC, HCHO, O3, humidity, temperature, light, barometric pressure, and occupancy — providing real-time insights into your environment. By identifying invisible pollutants and unhealthy conditions, you can take timely action to improve comfort, protect occupant health, optimize HVAC performance, and meet green building standards like WELL and LEED.

co2

CO2 (Carbon Dioxide)

Elevated CO2 levels lead to fatigue, headaches, and reduced focus. Cognitive performance declines when CO2 exceeds 1000 ppm, while 400–800 ppm is considered the optimal comfort zone. Maintaining healthy CO2 levels improves productivity, concentration, and overall occupant well-being.

o3

O3 (Ozone)

Ozone can originate from outdoor air or be generated indoors by devices such as some air purifiers, copiers, and disinfecting equipment. As a strong oxidant, elevated ozone levels may irritate the eyes and respiratory system, aggravate asthma, and react with other chemicals to form secondary pollutants. For healthier indoor environments, ozone concentrations should remain close to zero, and 8-hour average levels above 0.05–0.07 ppm indicate the need for increased ventilation and source control.

total volatile organic compounds

TVOC (Total Volatile Organic Compounds)

TVOCs are gases emitted from paints, furniture, adhesives, cleaning products, and office supplies. High concentrations can cause eye, throat, and skin irritation, and long-term exposure may impact cognitive performance and overall indoor comfort. Keeping TVOC levels low through proper ventilation and source control ensures safer, healthier, and more comfortable spaces.

formaldehyde

HCHO (Formaldehyde)

Formaldehyde is released from building materials, flooring, furniture, and textiles. Prolonged exposure may cause respiratory issues, watery eyes, and skin irritation. For healthier indoor environments, formaldehyde concentrations should remain below 0.08 ppm. Continuous monitoring and control help identify risks early, enable timely mitigation strategies, and support compliance with green building certifications.

particulate matter

PM2.5 & PM10 (Particulate Matter)

These tiny particles can enter the lungs and bloodstream, increasing the risks of allergies, asthma, and long-term respiratory diseases. For healthier indoor environments, PM2.5 levels below 15 μg/m³ and PM10 below 45 μg/m³ are recommended. Real-time monitoring helps you reduce exposure and maintain compliance with WHO IAQ guidelines.

temperature

Temperature

Indoor temperature directly affects comfort, productivity, and energy efficiency. Milesight IAQ sensors continuously monitor indoor conditions to maintain the recommended range of 20°C–26°C. Combined with intelligent HVAC automation, the solution helps optimize climate control, reduce energy costs, and create stable, comfortable environments.

humidity

Humidity

Maintaining the right humidity level is essential for health and comfort. Milesight sensors keep track of relative humidity (RH) in real-time, helping you stay within the 40%–60% optimal range. Proper humidity control prevents mold growth, bacterial spread, static electricity, and dryness-related discomfort, ensuring a better indoor experience for occupants.

light

Light

Our sensors measure illuminance levels to improve workspace comfort and enable automated lighting adjustments. Real-time light monitoring supports energy-saving strategies when combined with occupancy detection.

barometric pressure

Barometric Pressure

Fluctuations in indoor barometric pressure can affect occupant comfort, air circulation, and overall ventilation performance. Milesight sensors provide accurate pressure readings, helping facility managers optimize HVAC settings and maintain consistent airflow for better breathing comfort.

pir

Occupancy (PIR)

With built-in PIR occupancy detection, Milesight IAQ sensors intelligently identify whether a space is occupied or vacant. This data enables dynamic HVAC and lighting control, reducing unnecessary energy consumption while maintaining optimal comfort for building occupants.

Milesight IAQ Sensors

Milesight's AM Series IAQ sensors deliver high-precision monitoring, real-time analytics, and seamless connectivity, empowering businesses to create healthier, safer, and smarter indoor environments. Designed for diverse spaces — from offices and classrooms to hospitals and commercial buildings — our sensors ensure consistent, reliable, and actionable IAQ insights. For quick evaluation and deployment, the iBox IAQ Kit integrates Milesight IAQ sensors with gateways into a ready-to-use starter package.

am102 am102l

AM102/AM102L

2-in-1 IAQ Sensors

  • Itsy-bitsy & Eye-Catching
  • Traffic Light Indicator
  • Anti-theft Protection
  • 2.13Inch E-ink Screen (AM102)
  • Support Smart Screen Mode (AM102)
  • Support Hibernation Mode (AM102)
  • Battery Life up to 7 Years (AM102) / 9 Years (AM102L)

Temperature

Humidity

am103 am103l

AM103/AM103L

3-in-1 IAQ Sensors

  • Traffic Light Status Indicator
  • Anti-theft Protection
  • 2.13 Inch E-ink Screen (AM103)
  • Vivid Emoticon Indication (AM103)
  • Support Smart Screen Mode (AM103)
  • Support Hibernation Mode (AM103)
  • Battery Life up to 3 Years (AM103) / 4 Years (AM103L)

CO2

Temperature

Humidity

am307 am308 am308l am319

AM307/AM308(L)/
AM319

9-in-1 IAQ Sensors

  • Traffic Light Indicator & Buzzer
  • Higher Accuracy & Smart Screen Mode
  • Anti-theft Protection
  • Data Retrieval and Data Retransmission
  • 4.2-Inch E-ink Screen (AM307/AM308/AM319)
  • Vivid Emoticon Indication (AM307/AM308/AM319)
  • Powered via USB Type-C (AM319)
  • Battery Life up to 3 Years (AM307) / 1 Year (AM308)
  • Battery Life up to 1.5 Years (AM308L)

CO2

Temperature

Humidity

PIR

Light

TVOC

Barometric
Pressure

HCHO/O3

PM2.5 & PM10

ibox iaq kit

iBox IAQ Kit

  • Build Smart IAQ PoC in ONE Kit
  • End-to-End Solution
  • Plug & Play Deployment
  • Comprehensive Sensor Set
  • Seamless BMS Integration
  • Data-Driven Insights
  • Cost & Time Efficiency
Compare IAQ Sensors

Smarter Buildings with IAQ, Occupancy, and BAS Integration

Milesight IAQ solutions go beyond air quality monitoring by enabling smarter climate control and seamless integration with HVAC systems and Building Automation Systems (BAS). Through a combination of IAQ sensors, occupancy sensors, UC controllers, and LoRaWAN® gateways, organizations can achieve healthier air, greater comfort, improved energy efficiency, and smarter building management.

IAQ Data Empowering
Smarter HVAC Optimization

Milesight IAQ sensors provide real-time environmental data — such as CO₂, PM2.5, humidity, and temperature — that can be fed into HVAC systems. With these insights, ventilation are optimized automatically, ensuring cleaner air, greater comfort, and reduced energy waste.

Occupancy-Based Climate
Control for Better Air Quality

Milesight's occupancy sensors accurately detect presence and people flow, allowing HVAC systems to adjust ventilation according to actual usage. When more people enter, airflow increases to prevent CO₂ buildup and maintain comfort; when spaces are empty, systems switch to energy-saving mode. This ensures better air quality and comfort when spaces are in use, while reducing costs when they are not.

Bridging Legacy Wired
Sensors with UC Controllers

Milesight UC series controllers collect data from wired sensors through interfaces like RS485/RS232. They convert data into LoRaWAN® packets and transmit them to the LoRaWAN® gateway, ensuring that traditional wired devices can be seamlessly integrated into the IAQ and building management ecosystem.

LoRaWAN® Gateways Bridging
IAQ Data to BAS

Milesight LoRaWAN® gateways receive data from both UC controllers and IAQ sensors, then forward this information directly into Building Automation Systems. With support for BACnet, Modbus, and MQTT, etc., the gateways ensure smooth interoperability with existing BAS infrastructure, enabling centralized monitoring and intelligent rule-based automation.

Certified IAQ Sensors Supporting WELL, LEED,
and Green Building Standards

Milesight IAQ sensors deliver trusted IAQ insights — including CO2, PM2.5, TVOC, humidity, and formaldehyde — that help organizations align with WELL, LEED, RESET, and BREEAM certification requirements.

WORKS WITH WELL

Milesight AM319 9-in-1 IAQ Sensor has officially earned the coveted Works with WELL mark. "The Works with WELL program, introduced by IWBI earlier this year in response to the increasing demand for healthier building products and solutions, allows product manufacturers and service providers to validate and demonstrate how their offerings align with requirements in the WELL Building Standard (WELL)." – IWBI

* WORKS WITH WELL is a trademark of International WELL Building Institute PBC and used by those product manufacturers granted permission by International WELL Building Institute (IWBI) following IWBI's license criteria validation process.

Check Milesight AM300 in Directory from Works with WELL Program works with well

Success Story: LEED Certification

In practice, AM319 9-in-1 IAQ sensors supported StorHub, a leading
self-storage provider, in achieving 5 LEED Gold and 2 LEED Silver certifications across 18 facilities in Singapore. With quick wireless deployment and seamless integration into sustainability reporting tools, AM319 delivered accurate
real-time IAQ data required by LEED, enabling StorHub to track progress, improve indoor comfort, and streamline the certification process while minimizing operational disruption.

Learn more leed
diverse applications

Diverse Applications of IAQ Sensors: Every
Environment Covered

Indoor air quality affects everyone, everywhere — from offices and schools to hospitals and commercial spaces. With Milesight IAQ sensors, you gain a clear understanding of your environment and the ability to take action for healthier, safer, and more productive indoor spaces.

office

Office

Optimize IAQ and HVAC for Healthier, More Productive Workplaces

supermarket

Supermarket

Ensure Clean Air and Safe Ambience for Shoppers and Staff

restaurant

Restaurant

Monitor IAQ to Deliver a Safer and More Pleasant Dining Experience

hospital

Hospital/Clinic

Reduce Pollutant Spread and Protect Patients with IAQ Monitoring

gym

Gym

Keep CO₂ Low and Air Fresh for Safer, Energized Workouts

classroom

Classroom

Improve Learning Outcomes with Fresh Air and Balanced Comfort

church

Church

Create Healthier Shared Spaces with Real-Time IAQ Monitoring

Worldwide Success Stories: Schools, Offices, Hospitals & More

Milesight IAQ solutions are trusted worldwide, with successful deployments across schools, offices, hospitals, gyms, restaurants, and more. From improving student focus in classrooms to safeguarding patients in healthcare facilities and boosting productivity in workplaces, our sensors deliver measurable impact in real-world environments. Discover how global organizations rely on Milesight to create healthier, safer, and more sustainable indoor spaces.

milesight 47000 iaq sensors create healthier learning environment canadian schools

Milesight 47,000 IAQ Sensors Create a Healthier Learning Environment in Canadian Schools

The government of Quebec in Canada initiated the process of deploying IoT solution that is able to monitor temperature, humidity and the level of CO₂ in over 90,000 classrooms. By reporting every 5 minutes during the day, real-time monitoring is available and truly helpful.

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iaq solution empowers sustainability smart retail singapore nex shopping mall

IAQ Solution Empowers Sustainability of Smart Retail in Singapore NEX Shopping Mall

NEX Shopping Mall in Singapore has integrated Milesight's 9-in-1 IAQ sensor (AM319) with the Honeywell platform and its HVAC system. This solution enhances air quality for shoppers, tenants, and staff while optimizing energy savings.

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milesight 4400 sensors energize 62 energy efficient comfortable buildings canada

Milesight 4, 400 Sensors Energize 62 Energy Efficient and Comfortable Buildings in Canada

4,400 Milesight sensors have helped 62 smart buildings in Canada achieve comfort and energy savings, saving over $250,000 in the first quarter of 2022. This was primarily accomplished through data-driven analysis, remote management, and insights into energy consumption and indoor air quality.

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breath fresh tech transforming indoor air quality iot sensor solutions

Breath of Fresh Tech: Transforming Indoor Air Quality with IoT Sensor Solutions

50 units of Milesight AM319 IAQ sensors were deployed in luxury villas in Dubai integrated with Sensgreen's Smart Building Platform. This solution reduced energy use by 16%, cut costs by 12%, and improved humidity control, enhancing guest comfort and speeding up HVAC issue resolution by 35%.

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new york times interview sensor technology help keep office workers healthy

New York Times Interview: Can Sensor Technology Help Keep Office Workers Healthy?

In this article from The New York Times, our partner Yodit Bekele Stanton explained how sensing technology helps office admin in indoor air quality management and workplace occupancy management. The article features Milesight's products.

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bbc news isle man schools monitor air quality data pupils

BBC News: Isle of Man Schools to Monitor Air Quality Data for Pupils

Milesight AM107 IAQ sensors (upgraded to AM307) were deployed in Isle of Man schools to make sure classrooms are well ventilated to stop the spread of Covid-19 and make sure students can concentrate properly. Joel Smith from the Department of Education, Sport and Culture said: "They will provide vital data, enabling us to effectively review existing environments within schools and inform the planning stages of any education infrastructure in the future."

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iaq monitoring across 20 educational buildings harford community college hcc united states

IAQ Monitoring Across 20 Educational Buildings at Harford Community College (HCC), United States

Since 1957, Harford Community College (HCC) has been providing essential university-level core curriculum studies along with vocational trade instruction for area residents. The main campus occupies 352 acres near Bel Air, Maryland, and has 24 buildings totaling approximately 372,525 square feet. With indoor air quality monitoring, HCC could obtain the verifiable data to demonstrate for all its stakeholders that the IAQ in all HCC facilities was being maintained at safe levels.

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fight against energy poverty empowering smart city lot solutions valencia european green capital 2024

Empowering Smart City with IoT Solutions in Valencia, the European Green Capital 2024

The Wellbased project deployed Milesight AM103(L) IAQ sensors across households in Valencia and five other European cities to monitor CO₂, temperature, and humidity, helping vulnerable families improve indoor conditions and reduce energy costs. Data is centrally analyzed to provide actionable insights for residents and energy advisors, supporting healthier, more sustainable living. The sensors' reliable performance has led to lower energy bills, better health outcomes, and increased community engagement in sustainable energy practices.

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creating smart campus bms systems realtime monitoring control hvac systems maximize energy efficiency sustainability

Real-time Monitoring and Control of HVAC Systems to Maximize Energy Efficiency and Sustainability

In Abu Dhabi, Milesight and partner ADEEB deployed a smart campus solution for a university, using 100 VS121 AI Workplace Occupancy Sensors, 50 AM103 3-in-1 IAQ Sensors, and multiple LoRaWAN® gateways. The system monitors occupancy and indoor air quality in real time, enabling facility managers to adjust HVAC systems efficiently, reduce energy waste, and ensure comfort for students and staff.

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iaq water energy monitoring digital solutions drive leed certification

IAQ, Water, and Energy Monitoring Digital Solutions Drive LEED Certification

Milesight's AM319 9-in-1 IAQ sensors were deployed across StorHub's 18 Singapore facilities to provide real-time, accurate monitoring of temperature, humidity, CO₂, PM2.5/PM10, VOCs, and other indoor air quality parameters. The project helped StorHub achieve multiple LEED certifications while enhancing sustainability and operational efficiency.

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realtime air quality monitoring transforms major turkish airports

Real-Time Air Quality Monitoring Transforms Major Turkish Airports

Milesight's AM308L IAQ sensors were deployed across İzmir, Ankara, and Bodrum airports in Turkey, continuously monitoring CO₂, temperature, humidity, and VOC levels in real time. Connected via UG63 and SG50 LoRaWAN® gateways to a centralized Insight platform, the system provides instant alerts and AI-driven recommendations, enabling facility managers to maintain healthy air quality, improve passenger comfort, optimize energy use, and ensure compliance with public health standards.

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mmc melaka hospital environmental monitoring

MMC Melaka Hospital Environmental Monitoring

At Mahkota Medical Centre (MMC) Melaka, Milesight's AM107 (upgraded to AM307) sensors provide real-time monitoring of temperature, humidity, and indoor air quality across critical areas. The LoRaWAN® system delivers accurate, continuous data with instant alerts, enhancing patient safety, protecting equipment and medications, ensuring compliance, and improving operational efficiency.

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breathing easy enhancing indoor air quality lorawan innovations

Breathing Easy and Enhancing Indoor Air Quality with LoRaWAN® Innovations

At Hong Kong Polytechnic University, Milesight's AM307 IAQ sensors and UG65 gateway provide real-time monitoring of temperature, humidity, CO₂, and VOCs. Integrated with a digital twin, the system delivers spatiotemporal IEQ data to improve occupant health, wellbeing, and building sustainability.

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FAQs

Q: What role do IAQ sensors play in predictive maintenance for HVAC systems?

A: IAQ sensors monitor air quality, detecting issues such as pollutants, humidity, and temperature fluctuations in real time. By providing continuous data or air quality readings, these sensors help identify potential HVAC system inefficiencies early, allowing for predictive maintenance before breakdowns occur. This proactive approach improves energy efficiency, extends HVAC equipment lifespan, and ensures optimal indoor air quality.

Q: How do IAQ sensors influence building certification programs, such as Works with WELL?

A: IAQ sensors play a critical role in achieving building certifications like Works with WELL by ensuring continuous monitoring of air quality parameters such as CO2 levels, particulate matter, and humidity. These sensors provide data-driven insights that help maintain healthier, more comfortable indoor environments, aligning with the standards required for certifications that promote occupant well-being and energy-efficient practices.

Milesight AM319 9-in-1 IAQ Sensor has officially earned the coveted Works with WELL mark. This can help buildings achieve WELL certification, demonstrating their commitment to creating healthier and more supportive environments for occupants.

Q: How can IAQ sensors improve workplace safety?

A: Indoor air quality sensors enhance workplace safety by continuously monitoring air pollutants and ensuring ventilation systems operate effectively. This reduces the risk of health issues related to poor air quality, promoting a healthier work environment.

Q: How do IAQ sensors integrate with smart building systems?

A: IAQ sensors can easily integrate with smart building systems, allowing for automated adjustments to HVAC systems based on real-time air quality data. This ensures energy efficiency while maintaining a comfortable environment.

Q: What types of pollutants can IAQ sensors detect?

A: Milesight offers types of sensors to detect various indoor air pollutants, including volatile organic compounds (VOCs), carbon dioxide (CO2), particulate matter (PM), and humidity levels. Understanding these factors helps maintain efficient air monitoring, and know the time to open an air purifier or opening a window.

Q: How many IAQ sensors are needed for a building?

A: The number of sensors depends on room size, ventilation design, and monitoring needs. As a guideline, we recommend one sensor per 100–150 m² for offices or classrooms, with larger or high-traffic areas requiring additional coverage. Our team can help design the best deployment plan based on your specific situation.

Q: What platforms and protocols Milesight IAQ sensors support for integration?

A: Our sensors communicate via LoRaWAN® and can be connected through Milesight LoRaWAN® gateways or third-party gateways. With support for BACnet, Modbus, and MQTT of Milesight gateways, data can be seamlessly integrated into BAS systems or visualized on the IoT platform Dashboard.

Q: What is the typical battery life of Milesight IAQ devices?

A: The battery life of Milesight IAQ devices varies depending on the model and reporting interval, typically ranging from 1.5 to 7 years. For applications that require continuous operation, some models, such as the AM319/AM319L, support USB Type-C power. To further extend battery life, certain models also offer Smart Screen Mode and Hibernation Mode, optimizing power consumption while maintaining accurate monitoring. Our team can help you select the right model and configuration to best suit your building's needs.

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