sparky230
Registered

if yours has a insert, it should have printed numbers not raised ones, and should have a D gearbox with the space on the bottom for a magnet. it may say on the bottom direct decoder,if so this is the most recent version and Iwouldn't use it on pulse width, if it's the version thats not direct decoder ie no electronics inside the boiler it will be fine.
either way will date from mid 90's to present if has a insert
if i saw pictures could be more precise
either way will date from mid 90's to present if has a insert
if i saw pictures could be more precise