Listed as used. But unsure. As in new condition Drager Pac 6500 Carbon Monoxide Detector Dräger Pac® 6500 The robust Dräger Pac® 6500 is your reliable companion under tough conditions. The personal single-gas detection device measures CO, H2S, SO2 or O2 quickly and precisely. Measured data can easily be transmitted into the Dräger Gas Detection Connect system via Bluetooth®. Quick sensor response times and a powerful battery also ensure safety. This particular device is for Carbon Monoxide