The Yale 3109A Digital Mortice Lock is a premium smart lock designed to deliver maximum security with exceptional user convenience. Built for modern homes and commercial environments, it supports multiple access methods including PIN codes, RFID key tags, and a physical key, giving users complete flexibility in managing entry.

One of its standout safety features is the scramble PIN function, which allows users to enter random digits before or after their actual PIN—perfect for preventing others from guessing your code, even when they’re close by.

Advanced Security Features

Scramble Code Technology

Enter extra digits before or after your PIN to hide the real code and prevent PIN tracking.

Safe Handle Button

Stops small children from accidentally opening the door by requiring the interior button to be pressed when turning the handle.

Door Position Sensor

Ensures the door is fully shut before locking—preventing accidental locking when the door is ajar.

Auto-Locking

The built-in sensor detects when the door is closed and instantly locks, preventing tailgating or unauthorized entry.

Privacy Switch

A unique internal switch that disables all external authentication methods.
When activated, the lock can only be opened using the mechanical backup key.

Reliable Access Every Time

Even if the batteries run flat, the backup 9V emergency power terminal—located at the front behind the bottom cover—ensures you can still power the lock and gain access. Since 9V batteries are widely available, you’re never stuck outside.

For double doors, the lock is compatible with the *Yale YDM Series Rebate Kit (SYDMRK01)**, allowing seamless installation on rebated door sets.

Smart Home Ready

The included Yale YDM Home Module enables advanced smart functions through the Yale Home App, giving you full digital control of your lock.

Yale Home App Features

• Lock and unlock via your smartphone

• Grant one-time access

• Set scheduled or time-limited access

• Monitor visitor activity

• Check real-time door status