Please note when talking about door openers and motor locks:
A door opener is cheap, but it does not block the door. (possibly no insurance cover for burglary)
A motor lock locks automatically (mechanically or motor-driven) and opens electrically (motor-driven). Therefore, before buying an ekey access solution, you should make sure that a motor lock or an electric strike is available.
For existing doors (without wiring in the door) we will be happy to advise you and find the right retrofit solution for your special ekey project.