Testo’s residential/light commercial 327-1 Combustion Analyzer features advanced sensor technology with a three-year sensor warranty. According to the company, the 327-1 model features intuitive menu operation with easy to use single line probe for measuring O2, CO, temperature, draft, pressure CO2, efficiency, and excess air. It also includes eight pre-programmed fuels plus Bioheat® 5 fuel code. Data displays on a bright four-line LCD display and prints to an IR printer.

Testo Inc., 40 White Lake Road, Sparta, NJ 07871; 800-227-0729; info@testo.com; www.testo.us