Carlo Gavazzi ESCO2W2A is a wall-mounted NDIR carbon dioxide transmitter with a 0–2000 ppm measuring range, 4–20 mA analogue output and 12–36 V DC or 24 V AC supply for HVAC and building automation applications.
The Carlo Gavazzi ESCO2W2A is a compact wall-mounted carbon dioxide (CO2) transmitter designed for indoor air quality monitoring, HVAC control and building automation applications. As part of the Carlo Gavazzi ESCO2 series, it uses non-dispersive infrared (NDIR) sensing technology to provide reliable measurement of carbon dioxide concentration in occupied indoor environments.
The ESCO2W2A measures CO2 concentrations across a 0–2000 ppm range and converts the measured value into a standard 4–20 mA analogue current output. This industry-standard signal enables straightforward integration with compatible HVAC controllers, PLCs, building management systems and environmental monitoring equipment.
Designed for convenient wall mounting, the transmitter features a compact plastic enclosure measuring approximately 80 × 80 × 38 mm. It operates from a 12–36 V DC or 24 V AC supply, incorporates an M12 plug connection and provides IP54 protection for indoor building services and environmental monitoring installations.
Carbon dioxide concentration is an important indicator for occupancy-related indoor air quality and can be used to control ventilation according to actual demand. The ESCO2W2A continuously measures CO2 concentration and converts the reading into a standard 4–20 mA signal that can be monitored by compatible building and HVAC control equipment.
By incorporating the ESCO2W2A into a demand-controlled ventilation system, controllers can adjust fans, dampers and air-handling equipment in response to changing CO2 levels. This can help maintain comfortable indoor conditions while reducing unnecessary ventilation and supporting more energy-efficient building operation.
| Current | 2 A |
|---|---|
| Manufacturer | Carlo Gavazzi |
| Series | ESCO2 |
| Model | ESCO2W2A |
| Product type | CO2 wall transmitter |
| Measured variable | Carbon dioxide (CO2) |
| Sensing technology | Non-dispersive infrared (NDIR) |
| Mounting | Wall mounting |
| CO2 measuring range | 0–2000 ppm |
| Analogue output | 4–20 mA |
| Power supply | 12–36 V DC or 24 V AC |
| Connection | M12 plug |
| Housing material | Plastic |
| Protection rating | IP54 |
| Operating temperature | 0–50 °C |
| Dimensions (W × H × D) | 80 × 80 × 38 mm |
The ESCO2W2A is a wall-mounted CO2 transmitter used to monitor carbon dioxide concentration in HVAC, ventilation, indoor air quality and building automation systems.
The Carlo Gavazzi ESCO2W2A measures carbon dioxide concentration across a range of 0–2000 ppm.
The transmitter provides a standard 4–20 mA analogue current output for integration with compatible HVAC controllers, PLCs and building management systems.
The ESCO2W2A uses non-dispersive infrared (NDIR) technology to measure carbon dioxide concentration in the surrounding indoor environment.
The ESCO2W2A can operate from a 12–36 V DC or 24 V AC supply, providing flexibility when integrating the transmitter into HVAC and building automation installations.
Carlo Gavazzi ESCO2 transmitters provide dependable carbon dioxide monitoring for HVAC engineers, building automation specialists and system integrators requiring accurate environmental measurements for indoor air quality, demand-controlled ventilation and energy-efficient building control.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...