Product Description:The testo 310 is equipped with O2 and CO sensors, offering the perfect blend of simple functionality and high measurement precision. It is robustly designed for everyday use, with a battery life of up to 10 hours, and features measurement menus for smoke, draft, environmental CO, and pressure. The kit includes: testo 310 with rechargeable battery and calibration protocols for O2, CO, hPa, and °C; infrared printer (0554 3100)