• Residential / commercial combustion analyzer
• 0 - 4000 ppm CO
• 2 year sensor warranty
• Includes printer
• Does not have third sensor slot or NO sensor
• Fast and easy to operate: intuitive measurement menus and fast-response Smart-Touch display
• Large 5-inch Smart-Touch HD display - see all the system's measurements at a glance
• Ready to measure at the touch of a button from standby mode

The Testo 300 PRINTER (catalog number 0564 3002 83) is a residential / commercial combustion analyzer with O2 and CO sensor. CO measurement is up to 4,000 ppm. This package includes a printer. It does not have a third sensor slot or NO sensor. In the smart world of today, a combustion analyzer needs to do much more than provide reliably accurate results. Key to technician efficiency is an instrument that performs before and after taking a measurement to ensure speed and accuracy through an intuitive interface designed to make work easier. The user-friendly and highly efficient testo 300 was developed with this objective in mind. It is not just decades of experience in measuring technology. With smart-touch operation, robust construction and e-mailing of reports, the testo 300 will quickly become your indispensable companion for all measuring tasks involving heating.