Overview
Carbon monoxide (CO) is a colorless, odorless, and tasteless but highly toxic gas, often produced by the incomplete combustion of carbon-based fuels such as oil, gas, and solid fuels. Regular monitoring of CO emissions around heating systems and their surroundings is essential for safety and compliance.testo 315-4 – Precision CO Measurement
The testo 315-4 is a state-of-the-art, easy-to-use, and robust CO measuring instrument, designed for accurate ambient air monitoring. It enables reliable detection of carbon monoxide around heating systems, with the additional capability to measure humidity and temperature in parallel.Measurement results are displayed clearly on a digital screen, and if CO levels exceed the user-adjustable limits, both visual and audible alarms are triggered. To enhance efficiency, the device features a lithium polymer battery with an automatic power-off function, ensuring energy-saving operation when not in use.
Expand Your testo 315-4 with Accessories
The testo 315-4 is built to withstand demanding conditions, with optional accessories available to extend its functionality:- TopSafe Protective Casing – Water and dirt-resistant for reliable operation in tough environments.
- Testo Fast Printer – Allows on-site printouts via wireless infrared transmission for instant documentation.
- Temperature/Humidity Module – Expands measurement capabilities to include temperature and humidity alongside CO monitoring.





