... . Can set up with 12 remote controllers, and have 6 different passwords by 6-15 numbers combination.3. Set the numeral ciphers through ... different password can open the door for 18 years.6. Setting and delete by management code, add remote control and remote controller ... steel avoid for pried, sawing, cutting etc; password made by 6-15 code, 43 billion numeral rolling-code, unable to unlock ...