This is a genuine like for like replacement for the remote for a Humax PVR. I agree with others that is appears faster than the original and, again like others, is a necessary replacement as the OK button seems to fail after a while. However, the main purpose of my review is to refer to the 3 or 4 digit code business. My original remote required a four digit code and these are what are listed in the appendix to the manual. This one requires only 3 digits. The answer lies in downloading the correct codes and the procedure is: Logo onto the humax site (as you probably know Amazon do not allow links in reviews- so type humax then digital then dot then com!). Hover over support then select rcu code list. Although this remote is an RM-F01, you need to click on the RM-E06 as this is the one that requires the 3 digits codes (to confirm this look under the batteries in the remote and you will see the code MDB1.3). That should sort you out.