This is one of our favorite outside speakers for almost any drive-thru system, it also functions as a high-quality sounding microphone for the HME SYS2500, HME SYS6000 WIQ, and HME ion|IQ. 

Please note - this is the current provided speaker with the HME EOS | HD but it does not function as a microphone for HME's latest systems.  The EOS | HD, and the NEXEO | HD both use the HME DM5 Microphone.