Help to keep indoor areas safe with this carbon monoxide probe from Testo. It uses an electrochemical sensor to take precise readings of carbon monoxide levels, helping you ensure greater workplace safety. A button allows you to store readings for quick data logging, and Bluetooth connectivity allows you to wirelessly transmit data to your devices across a distance of 20m. You can use it with measuring instruments from the 440 series for convenient assembly.

• Light weight of 168g for ease of handling
• Long battery life of 70 hours for long-term use
• Wide CO measurement range between 0 and 500ppm for use in a wide variety of environments

• Boiler rooms
• Residential and commercial buildings
• Storage facilities

Yes, this probe has a wide operating temperature range of -5°C to +50°C for use in harsh environments.