Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Yale YKB/550/DB1 Electronic Key Cabinet. Designed for secure storage of up to 100 keys, this cabinet features electronic PIN code access and a manual key override. Please read these instructions carefully before using the product to ensure proper function and security.

Image: Front view of the Yale YKB/550/DB1 Electronic Key Cabinet in its closed state, showcasing the electronic keypad and manual override lock.
Safety Information
Always follow basic safety precautions to reduce the risk of injury or damage. Keep the manual keys in a secure location separate from the cabinet. Do not store flammable materials inside the cabinet. Ensure the cabinet is securely mounted to a wall to prevent accidental tipping or removal.
Package Contents
Verify that all components are present before installation:
- Yale YKB/550/DB1 Electronic Key Cabinet
- Manual Override Keys (2)
- Mounting Bolts
- AA Batteries (4)
- Key Tags/Labels
Setup and Installation
The Yale YKB/550/DB1 Electronic Key Cabinet is designed for easy and secure wall mounting.
- Choose a Location: Select a suitable wall location that is secure and provides easy access. Ensure the wall material can support the weight of the cabinet and its contents.
- Mark Drilling Points: Use the pre-drilled holes on the back of the cabinet as a template to mark the drilling points on the wall.
- Drill Holes: Drill holes at the marked points using an appropriate drill bit for your wall type.
- Insert Wall Plugs: Insert suitable wall plugs (if required for your wall type) into the drilled holes.
- Mount the Cabinet: Align the cabinet with the drilled holes and secure it to the wall using the provided mounting bolts. Ensure the cabinet is firmly attached and stable.
- Install Batteries: Open the cabinet using one of the manual override keys. Locate the battery compartment, typically on the inside of the door. Insert the 4 AA batteries, ensuring correct polarity.

Image: Front view of the Yale YKB/550/DB1 Electronic Key Cabinet with exterior dimensions indicated (Height 55cm, Width 35cm, Depth 15cm). This image illustrates the physical size for installation planning.

Image: Side view of the Yale YKB/550/DB1 Electronic Key Cabinet with the door open, revealing the internal structure and depth for key storage and battery access.
Operating Instructions
Opening the Cabinet
The cabinet can be opened using either a PIN code or a manual override key.
- Using PIN Code:
- Enter your 3-8 digit PIN code on the electronic keypad.
- Press the '#' or 'Enter' key (refer to specific keypad markings).
- If the code is correct, the green LED indicator will illuminate, and you will hear an audible signal.
- Turn the handle clockwise to open the cabinet door.
- Using Manual Override Key:
- Insert one of the provided manual override keys into the keyhole, usually located behind a cover on the keypad panel.
- Turn the key to unlock the mechanism.
- Turn the handle clockwise to open the cabinet door.
Setting/Changing PIN Code
The PIN reset button is located inside the cabinet. This ensures that only authorized users with access to the opened cabinet can change the code.
- Open the cabinet using your current PIN or the manual override key.
- Locate the PIN reset button on the inside of the door or near the battery compartment.
- Press the reset button. The yellow LED indicator on the keypad should illuminate.
- Enter your new 3-8 digit PIN code on the keypad.
- Press the '#' or 'Enter' key to confirm.
- The green LED will flash, indicating the new PIN has been successfully set.
Automatic Locking System
The cabinet features an automatic locking system for enhanced security:
- After 3 incorrect PIN code attempts, the system will lock for 20 seconds. During this time, no codes can be entered.
- After 6 incorrect PIN code attempts, the system will lock for 5 minutes.
Key Organization
The cabinet includes adjustable internal hooks and labels for organized key storage.
- Arrange the key hooks as needed to accommodate various key sizes and quantities.
- Use the provided labels to identify each key hook for quick retrieval and management.

Image: Interior view of the Yale YKB/550/DB1 Electronic Key Cabinet, showing adjustable key hooks with keys and labels for organized storage.
Maintenance
- Battery Replacement: The red LED indicator will illuminate when the battery level is low. Replace all 4 AA batteries promptly to ensure continuous operation. Use only new, high-quality alkaline batteries.
- Cleaning: Clean the exterior of the cabinet with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the finish or electronic components.
- Keypad Care: Keep the keypad clean and dry. Avoid pressing keys with excessive force.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Cabinet does not open with PIN code. | Incorrect PIN entered. Batteries are low or depleted. System is locked due to multiple incorrect attempts. | Re-enter PIN carefully. Replace batteries. Wait for the lockout period (20 seconds or 5 minutes) to expire. Use manual override key if urgent. |
| Red LED illuminates when entering PIN. | Incorrect PIN code. Low battery. | Verify and re-enter the correct PIN. Replace batteries. |
| Green LED does not illuminate. | Incorrect PIN code. Batteries are completely depleted. | Ensure correct PIN is entered. Replace batteries immediately using the manual override key to open the cabinet. |
| Cabinet handle turns but door does not open. | Locking mechanism is not fully disengaged. | Ensure the correct PIN or key has fully disengaged the lock before turning the handle. Apply slight pressure to the door while turning the handle. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | YKB/550/DB1 |
| Brand | Yale |
| Security Type | Electronic (PIN Code) and Key |
| Key Capacity | 100 Hooks |
| PIN Code Length | 3-8 Digits |
| Exterior Dimensions (H x W x D) | 550 x 350 x 130 mm (approx. 55 x 35 x 13 cm) |
| Interior Dimensions (H x W x D) | 540 x 340 x 80 mm (approx. 54 x 34 x 8 cm) |
| Weight | 12.5 kg |
| Material | Durable Metal Construction |
| Finish | Powder Coated (Black) |
| Power Source | 4 x AA Batteries (included) |
| Mounting Type | Wall Mount |
| Special Features | Anti-bumping solenoid, LED indicators (Green for open, Red for error/low battery), PIN reset button inside. |
Warranty and Support
For warranty information and customer support, please refer to the documentation provided at the time of purchase or visit the official Yale website. Keep your proof of purchase for warranty claims.
If you encounter issues not covered in this manual, please contact Yale customer service for assistance.
