This listing is for our third Generation model One radio, which uses RF (Radio Frequency) technology. Please make a note in the comments section of your order to check to see if there is a black box dangling from the back of your radio with a white wire or just a white wire--- if you can please also send us the serial number located on the bottom of your radio or outside of your box, as there are two different versions of these remotes available. (NOTE: USPS SHIPPING INCLUDED)