CO2, Temperature & Humidity Sensors
Accurately measure CO2, temperature and humidity levels in each room or zone. No cables.
Accurate & reliable indoor air quality updates
The small and wireless CO2 sensors simply stick onto the wall and are solar-powered using ambient room light, making them easy to install and very low maintenance.
Our wireless sensors measure the carbon dioxide (CO2) levels, ambient temperature and relative humidity in a room or zone. The sensors wirelessly transmit data to your chosen cloud-based or on-prem IoT platform, via our Smart Gateways.
Product Features & Specifications
- Measures ambient carbon dioxide (CO2), temperature and relative humidity.
- Reports every 5 minutes when solar-powered or 15 minutes when battery-powered.
- Small, discreet sensors simply stick to the wall.
- CO2: 0-2550PPM (accuracy ± 125PPM)
- Temperature: 0-51ºC (accuracy ± 0.5ºC)
- Humidity: 0-100% RH (accuracy ± 5%)
- EnOcean internationally approved, licence-free ISM bands:
- 868 MHz for Europe (RED)
- 902 MHz for North America (FCC) and Canada (IC)
- 928 MHz for Japan (ARIB specification)
- EnOcean Equipment Profile (EEP): A5-09-04
- Transmit up to 30 metres in buildings and 300 metres in free field
- Solar-powered using ambient room light – optimally angled to absorb light – with a battery back-up for periodic low-light conditions.
- Batteries typically last up to 10 years.
- 115 x 80 x 35 mm (approx)
Want to buy indoor air quality sensors for your smart project?
Looking to order over 50 sensors or have regular requirements for sensors?
3 measurements with a single sensor
Accurate condition updates every 5-15 minutes
Designed for fitting at head height to ensure accurate air quality readings. The sensor sends data every 5 minutes when solar-powered or 15 minutes when battery-powered.
Low maintenance with zero cables
The sensors use ambient room light – natural or lighting – for power, with a backup battery power source giving you continual operation in the evening.
Real-time local or cloud data
Data can be sent securely to a local network or the cloud — via Ethernet, LTE (4G) or WiFi through an MQTT broker or ready connections to AWS and Microsoft Azure. No subscriptions or recurring fees.
CO2, Temperature & Humidity Sensor FAQs
These sensors monitor three key indoor conditions:
- Carbon dioxide (CO₂) levels: 0–2550 ppm with ±125 ppm accuracy.
- Temperature: 0–51 °C with ±0.5 °C accuracy.
- Relative humidity: 0–100% RH with ±5% accuracy.
These combined readings provide a full picture of indoor air quality and comfort levels.
These three factors work hand-in-hand to define indoor comfort and wellbeing. High CO2 levels signal poor ventilation, while temperature and humidity affect comfort, health, and even equipment performance. Monitoring all three ensures commercial spaces remain safe, comfortable, and energy-efficient.
The sensor is designed for reliable commercial use and provides readings within the below ranges:
- CO₂ readings within ±125 ppm.
- Temperature within ±0.5 °C.
- Humidity within ±5%.
This level of accuracy ensures data you can trust for decision-making around ventilation and building management.
The device uses ultra-low power and energy harvesting technology with:
- A built-in solar cell to harvest energy from ambient room light.
- A lithium backup battery (3.6 V A-size) for low-light conditions. Battery life is up to 10 years, depending on light availability and reporting frequency.
- Solar powered mode: sends readings every 5 minutes.
- Battery backup mode: sends readings every 15 minutes to conserve power. This ensures reliable monitoring while optimising power efficiency.
Our CO2, Temperature and Humidity sensors use the EnOcean wireless protocol (EEP: A5-09-04) and can transmit data up to 30 metres indoors and up to 300 metres in open space, allowing flexible deployment across different building types without Wi-Fi or hardwiring.
The sensor features automatic CO₂ calibration every 8 days to maintain accuracy. Manual calibration is also possible via the DIP switch and “learn” button. Thanks to the solar-assisted power and low-maintenance design, ongoing upkeep is minimal.
The sensor is compact (115 × 80 × 35 mm), discreet, and supplied with a wall-mounting backplate. Installation requires no complex wiring, and the sensor begins transmitting measurements within seconds once fitted and powered on.
Yes. Data is transmitted securely via the EnOcean wireless protocol and accessed through a Pressac Smart Gateway. The data transmitted by our sensors can be integrated into platforms such as MQTT, Azure IoT Hub, AWS IoT Core, IBM Watson IoT, and Google Sheets, giving you complete flexibility with no vendor lock-in.
Yes. The sensors are designed for scalable deployments, from individual rooms to entire campuses. Data from multiple devices can be centralised and analysed in real time, helping to monitor air quality and comfort across diverse spaces.
Yes. Due to their simultaneous monitoring of CO2, temperature and humidity, our sensors can support compliance with building regulations, energy efficiency frameworks, and wellbeing standards such as WELL or RESET, making them valuable for both facilities management and employee health.
No. There are no hidden costs or platform lock-ins. You remain in control of your data, and the sensors can integrate with your chosen platforms without mandatory subscription fees.
How do our CO2, temperature & humidity sensors work?
Our technology is system agnostic, the data from our sensors can be used in any way you need. There are different options to choose from, making it easy to get your data in the way that’s right for you.
Find out how CO2 monitoring sensors are helping create healthier workplaces
Why choose Pressac CO2, Temperature & Humidity sensors?
Discover some of the reasons why our customers love our CO2, temperature & humidity sensors!
Accurate Air Quality Monitoring
Our sensors continuously measure carbon dioxide (CO₂), temperature, and relative humidity to provide real-time insights into indoor air quality. Designed for workplaces, schools, and shared buildings, they help you ensure a safe, comfortable environment that supports wellbeing and productivity.
Simple, Wireless Installation
Compact and discreet, the sensors can be wall mounted with ease using the supplied backplate. Data is transmitted wirelessly using the EnOcean protocol, making them ideal for scalable rollouts without the need for additional wiring.
Energy-Efficient & Low Maintenance
Built with ultra-low power technology, the sensors operate efficiently for extended periods. Options with solar assistance reduce the need for regular battery changes, keeping both downtime and maintenance costs to a minimum.
Secure & Seamless Data Integration
Your data stays under your control. Sensor readings are transmitted securely using the EnOcean wireless protocol and integrated into your chosen IoT or building management platform via a Pressac gateway. With support for MQTT, Azure IoT Hub, AWS IoT Core and more, you benefit from flexible, future-proof integration with no hidden costs or vendor lock-in.
Contact the Pressac Team
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