Complex sentence: It was never widely used in general commercial receivers, but due to its small parts count is used in a few specialized low data rate applications, such as garage door openers, wireless networking devices, walkie-talkies and toys.
Split into simpler sentences: It was never widely used in general commercial receivers, but due to its small parts count it was used in speciallized applications. It is still used in a few specialized low data rate applications, such as garage door openers, wireless networking devices, walkie-talkies and toys.