Yale YDR4109

Voice Guide
As the voice guide is offered that lets you know the operation status and how to set each feature and mode for easier and more convenient use.
Smart Touchpad
To prevent the password from being exposed due to residual fingerprints after opening a door, a new technology has been adopted to complete the door opening process by touching the keypad with a palm after entering the password.
Anti-panic egress with Safe handle
For convenience and in case of emergency, the door is automatically unlocked whenever the inner lever handle is used. And also safe handle will protect from any break-in attempts.
Scrambling code
You can add meaningless number prior to or after the right code when there is a chance of exposing it to others.
Alarm (Break-in / Damage)
80dB alarm goes off if anyone attempts to damage the lock or force the door open, or if the lock detects
Security / Normal mode
For multi-user environment. YDM4109 can be turned to Security(Master) mode that the master can register and delete each user while Normal mode controls all the users at one time,
Operation status notification
Whenever any operation is made, the keypad informs you what is happened through different alignment of the numbers.
Low battery alarm and emergency power supply terminal
It warns in case of low battery with alarm and LED. When the batteries are completely discharged, you can easily supply emergency power to the lock with the standard 9V battery,