I have a garage door opener Lift-Master 1/2 HP Security + there is no model No. but I fund these info. on it, 41A5021-B FCC ID: HBW1127 101241A 1998- Canada I need a copy of its user manual and I will be appreciated if you can email me a copy or let me know wich model No. it is and where I can fund a copy of the manual. Thanks, Mohammad Dadgar My Emial Is 123400@yahoo.com