testo 330-2 LL flue gas set H2 for customer service and maintenance technicans, incl. BLUETOOTH, rech. battery and calibration protocol; mains unit 100-240 V for mains operation or charging the rechargeable battery in the instrument; combustion air temperature probe, length 190 mm; hose connection set for separate gas pressure measurement; Testo BLUETOOTH printer with mains unit; basic system case flat; flue gas probe; lenght 300 mm, Ø8 mm, Tmax. 500 °C