1. Product Overview
The Alarm Lock Trilogy T2 DL2700/26D is a standalone electronic digital keypad cylindrical lock leverset designed for secure keyless entry. It supports up to 100 user entry codes, each 3 to 5 digits long, and features a satin chrome finish for durability. This lock is suitable for interior door installations and offers a reversible lever handle for flexible operation.
Key Features:
- Electronic digital keypad for keyless entry.
- Supports up to 100 programmable user codes (3-5 digits).
- Cylindrical lock mechanism with a fixed 6-pin key cylinder for key override.
- Reversible lever handle for right- or left-hand door operation.
- Durable stainless steel trim with satin chrome finish.
- Powered by 5 AA batteries.
- Meets ANSI/BHMA Grade 1 standards, UL listed for 3-hour fire rating, and FCC certified.

Figure 1: Alarm Lock Trilogy T2 DL2700/26D Digital Lock with Keypad and Lever Handle.
2. Setup and Installation
Proper installation is crucial for the functionality and security of your Alarm Lock Trilogy T2. This lock is designed for interior doors. For detailed step-by-step instructions, please refer to the official Installation Manual PDF provided by the manufacturer.
Important Note: Installation of this cylindrical lock mechanism requires two bored perpendicular holes in the door: one in the door face and a crossbore hole in the door edge. Installation may require specific tools and drilling. If you are not comfortable with these procedures, it is recommended to consult a professional locksmith or installer.
2.1 What's in the Box:
- Trilogy T2 electronic digital keypad leverset
- Latch cylinder
- Strike plate
- Latch cover
- Trim plate
- Keys (2)
- Battery pack with 5 AA batteries
2.2 Pre-Installation Considerations:
- Door Thickness: The lock fits doors with a thickness of 1-5/8 to 1-7/8 inches.
- Backset Width: The required backset width is 2-3/4 inches.
- Lever Handing: The lever handle is reversible and can be configured for either right-hand or left-hand door operation during installation.
- Power: The unit operates on 5 AA batteries (included). Ensure fresh batteries are installed correctly.

Figure 2: Installation dimensions for the Alarm Lock Trilogy T2 DL2700/26D.
For detailed drilling templates and assembly steps, please refer to the Installation Manual (PDF).
3. Operating Instructions
The Alarm Lock Trilogy T2 allows for secure access using programmable user codes or a physical key override.
3.1 Programming User Codes:
User codes are programmed directly through the keypad. The lock supports up to 100 unique codes, each consisting of 3 to 5 digits. Refer to the full instruction manual for specific programming sequences, including adding, deleting, and modifying user codes. LED indicators and audible sounds provide feedback during the programming process.
3.2 Granting Access:
- Keypad Entry: Enter a valid 3-5 digit user code on the keypad. The lock will disengage, allowing the lever to turn and open the door. The lock will automatically re-engage when the door is closed.
- Key Override: Insert one of the provided keys into the solid brass 6-pin cylinder and turn to engage or release the lock mechanism. This provides a manual bypass for the electronic system.
3.3 Feedback Indicators:
The lock provides visual (LED) and audible feedback for code entry, programming, and system status. Consult the detailed manual for a complete list of indicator meanings.
4. Maintenance
The Alarm Lock Trilogy T2 is designed for durability and requires minimal maintenance.
4.1 Battery Replacement:
The lock is powered by 5 AA batteries. When batteries are low, the lock will provide an indicator (refer to the full manual for specific low battery alerts). To replace batteries:
- Locate the battery compartment, typically on the interior side of the lock.
- Open the compartment and remove the old batteries.
- Insert 5 new AA alkaline batteries, ensuring correct polarity.
- Close the battery compartment securely.
Expected battery life is approximately 120,000 cycles.
4.2 Cleaning:
The satin chrome finish is resistant to corrosion. Clean the exterior surfaces with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the finish or electronic components.
5. Troubleshooting
If you encounter issues with your Alarm Lock Trilogy T2, consider the following troubleshooting steps:
- Lock Not Responding to Keypad:
- Check battery level and replace batteries if necessary.
- Ensure the correct user code is being entered.
- Verify that the keypad is clean and free from obstructions.
- Electronics Not Working After Installation:
- Inspect all wiring connections for proper seating and ensure no wires are pinched or damaged, especially at the door interface.
- Confirm batteries are installed correctly and are fully charged.
- Buttons Not Functioning:
- If specific buttons or rows of buttons stop working, this may indicate a hardware issue. Contact customer support for assistance.
- Lever Not Engaging/Disengaging:
- Ensure the lock mechanism is properly aligned within the door.
- Check for any physical obstructions preventing the latch from extending or retracting fully.
For further assistance, refer to the complete troubleshooting guide in the official manual or contact Alarm Lock customer support.
6. Specifications
| Feature | Specification |
|---|---|
| Brand | Alarm Lock |
| Model Name | DL2700/26D |
| Lock Type | Keypad, Cylindrical |
| User Codes Supported | Up to 100 |
| Code Length | 3 to 5 digits |
| Key Override | Solid brass, 6-pin cylinder with SC1 keyway |
| Power Source | 5 AA batteries |
| Battery Life | Approx. 120,000 cycles |
| Door Thickness | 1-5/8 to 1-7/8 inches |
| Backset Width | 2-3/4 inches |
| Material | Metal, Brass (handle) |
| Finish | Satin Chrome |
| Item Dimensions (L x W x H) | 9 x 11.8 x 11.9 inches |
| Item Weight | 8 pounds |
| Certifications | ANSI/BHMA Grade 1, UL Listed (3-hour fire rating), FCC Certified, ADA Compliant (when properly installed) |
| Usage | Indoor/Outdoor Use - Weatherproof |
7. Warranty and Support
7.1 Warranty Information:
Specific warranty details for the Alarm Lock Trilogy T2 DL2700/26D are provided by the manufacturer. Please refer to the documentation included with your product or visit the official Alarm Lock website for the most current warranty policy.
7.2 Customer Support:
For technical assistance, replacement parts, or further inquiries, please contact Alarm Lock Systems, Inc. customer support. Contact information can typically be found on the manufacturer's website or in the product packaging.





