Security+ 3.0 Keypads | Programming to LiftMaster Medium and Light Duty Operators

How to Program MAX (L979M, CH348) and Universal (L979U, CHU48) Keypads to Medium Duty and Light Duty Commercial Operators

Before You Begin

• Ensure the area around the door is clear. The door will move during programming and verification.
• Read all instructions carefully before starting.
• Keypads are pre-set to Security+3.0 out of the box. Because Medium Duty Commercial Operators use Security+ (390 MHz or 315 MHz) and Light Duty Commercial Operators use Security+ 2.0, you must put the keypad into Programming Mode to pair it.
• Programming allows the keypad to provide single-button control with a 4-digit PIN.

Step 1: Put the Keypad in Programming Mode

1. Press and hold the 0 and 3 buttons simultaneously.
2. Continue holding until the LEDs remain solidly lit, typically about 6 seconds, then release the buttons.
   • LED indicators by keypad type:
     • MAX Keypad (L979M, CH348): LEDs will be solid red.
     • UNIVERSAL Keypad (L979U, CHU48): LEDs will be solid blue.

Step 2: Program the Keypad to the Operator

1. Start with the commercial door in the fully closed position.
2. Press and release the LEARN button on the Medium Duty or Light Duty Commercial Operator. The LED above the LEARN button will light up solid.

3. Within 20 seconds, enter your 4-digit Personal Identification Number (PIN) on the keypad and press the HOME button:
   • MAX Keypads (L979M, CH348): press HOME two times.
   • Universal Keypads (L979U, CHU48): press HOME three times.
4. Wait for the operator to move the door (this can take up to 25 seconds).
5. When the door begins to move, within 3 seconds press and release the HOME button. The keypad is now paired to the operator.

Step 3: Verify Programming

1. Enter your 4-digit PIN and press the HOME button.
2. If programming was successful, the operator will move the door.
3. If the door does not move, repeat programming steps.