ExplorIR®-W CO2 Sensors

Our ExplorIR®-W CO2 Sensors are designed for multi-sensor applications which require more than CO2 measurement, the ExplorIR®-W CO2 Sensors (formally known as the CozIR Wide Range sensor) integrates temperature and relative humidity (RH) sensing. It also offers a voltage output option for integration into legacy systems. As with other SST wide range sensors, it is offered with ranges supporting 0-5% right through to 0-100% concentrations.

Based on SmartIR technology, the sensor consumes only 3.5mW in full-speed operation, delivering two carbon dioxide measurements per second. That’s typically 50 times lower powered than standard NDIR sensors. Other benefits of the SmartIR technology are also included – robustness and vibration proof, being based on sold state LED technology.

The sensor’s combination of extremely low power consumption and instantaneous warm-up answers directly to the growing demand for sensors which can be integrated into battery or self powered wireless systems, allowing economical real time monitoring of CO2 concentration levels.

We can supply an optional USB to TTL cable which gives users a fast, simple method to attach our sensors to the PC and directly view measurements.

ExplorIR®-W Wide Range CO2 Sensors are extremely reliable and accurate.


  • Vibration and shock resistant
  • Solid-state – no moving parts, no heated filaments
  • Low power/energy consumption – 3.5mW
  • >15 years lifetime
  • Measures up to 100% CO2 concentration
  • Optional temperature and RH% sensing
  • Non-heating
  • Digital (UART) or analogue (Voltage) output
  • RoHS compliant


  • Robust and versatile
  • Reliable in harsh, volatile environments
  • Ideal for low power and battery applications
  • Up to 50X lower power than typical NDIR CO2 sensors
  • Long lifetime – low maintenance
  • Suitable for wireless, portable, wearable and self-powered systems
  • Integrates with wireless IoT networks such as ZigBee, Wifi, LoRa, Bluetooth, SigFox and EnOcean

The SST Sensing Philosophy

Our primary goal is to deliver the required sensing and control solutions to our customers which exactly meet their technical and commercial sensor requirements. This can be achieved through our standard range of sensors or providing customer specific sensor solutions. We have been designing and manufacturing fluid and gas sensing solutions for over 15 years. Where a specific solution is required, SST Sensing Ltd will identify the suitable technology and use this as a building block to provide a bespoke customer solution.

Technical Support

Our technical department is comprised of highly experienced and qualified engineers who work extensively with our customers to ensure their requirements are met. Our engineers work with customers to provide full application and technical support if required.

SST now has over 60 employees and our success is growing day by day. The core of this success is due to our strong commitment to our customers. Therefore, we want to ensure that our customers feel valued at all times.

Quality Products

As an ISO 9001:2015 certified organisation, SST manufacture, design, customise and configure a range of sensors and switches for gases and liquids.

Within our vast range of standard product offerings you will find; miniature, solid state optical liquid level switches; rugged, robust and reliable Zirconium Dioxide oxygen sensors; factory calibrated optical oxygen sensors that measure ambient oxygen levels and finally carbon dioxide sensors which are powered using energy harvesting technology.


At SST we understand that customer needs vary and can be very specific. SST’s application engineers work directly with our customers’ engineers to provide application and technical support. SST have the in-house ability to take any of our standard range of sensors and customise it to your exact specification if the standard spec is unsuitable.

Whether that be adding or modifying electronics and software, changing outputs, adapting housing or thread styles, adding cabling, connectors or environmental protection.

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