Chamberlain Powerdrive PD422D 1/2 HP Security Plus Screw Drive Garage Door Opener "programing garage door remote keeps" Questions

...remote door openers I am trying to add a remote key pad to the exterior of the door. When that is programmed and working it knocks out the car remote. I have 2 of those. How do I get all three to ...

...garage door opener remote control (Clicker) model KLIK1U. So I bought it and follow their 7 step instruction but did not work. My question is: Are Lowe's right about the remote just die and if they ...