Measures CO, CO², differential pressure and temperature, tightness and room CO tests. Ideal for when installing and servicing domestic oil and gas appliances or to conduct combustion performance and efficiency checks. Features easy-to-use rotary dial, 6-line display, protective rubber casing and purge pump to protect against damage to CO sensor. Fitted with RFID tag and supplied with printer, probe, pressure connectors, USB charger and Rocase carry case. Detects Carbon Monoxide & Oxygen 240mm Stainless Steel K-Type Visual Alarm Adjustable Background TIC Rate 1 Year Guarantee Detects Carbon Monoxide & Oxygen 240mm Stainless Steel K-Type Visual Alarm Adjustable Background TIC Rate 1 Year Guarantee