Drager Pac® 6500 Monitor Carbon Monoxide Single Gas Monitor(CO)- 8327615 -1/CSDescription Small, robust, ergonomic, intuitive, economic and powerful Tailor made for personal monitoring at the workplace Equipped with a wide range of functions Suitable for many different applications in day to day industrial settings Bump testing (qualitative function check) of the sensors, is a recommended function and requires test gas cylinders and bump test accessories P#: 8327615