Draeger Safety Remote Sampling Pump for The Draeger X-am Series Gas Monitors (X-am 2000, X-am 5000, X-am 2500, X-am 5100 and X-am 5600) with USB Charger, Wall Plug and Shoulder Strap.: Amazon.com:
Dräger X-am 5100 Single Gas Detector - Top 5 Things You Need to Know