Will non-Lego remote controls work with Lego IR receivers?
It depends on how faithfully the remote was copied, specifically if the electronics was copied as well as the form factor. If KAZI just took a four channel IR module that uses another protocol and stuck two of them into the casing, the sent signals would most probably be incompatible with LEGO's PF system.
The channel number is only a manufacturer convention, without any inter-corporally agreed upon standards, so there is no universally accepted &quot;channel&quot; for IR remotes.