Yale YEC/390/DB2 Electronic Safe with Alarm User Manual
Model: YEC/390/DB2
Introduction
This manual provides essential instructions for the safe and effective use of your Yale YEC/390/DB2 Electronic Safe with Alarm. Please read this manual thoroughly before installation and operation, and retain it for future reference.
Product Overview
The Yale YEC/390/DB2 Electronic Safe with Alarm offers standard security for your valuables. It features an electronic keypad for access, a mechanical override key, and an integrated 130dB alarm system to deter unauthorized access.

Figure 1: Yale YEC/390/DB2 Electronic Safe with Alarm

Figure 2: Key features of the Yale YEC/390/DB2 Electronic Safe, including the electronic lock with handle, LED indicators for open, error, and low battery, the anti-shock solenoid locking mechanism, and the 130dB integrated alarm.
Package Contents
Verify that all items are present in the package:
- 1 x Yale YEC/390/DB2 Electronic Safe
- 2 x Mechanical Override Keys
- 4 x AA Batteries
- 1 x Fixing Bolt Kit (for wall or floor mounting)
- 1 x User Manual / Assembly Instructions

Figure 3: Included accessories: 4 AA batteries, 2 mechanical keys for emergency access, and a fixing kit for wall or floor mounting.
Setup
1. Battery Installation
- Open the safe door using the mechanical override key (if not already open).
- Locate the battery compartment on the inside of the safe door.
- Insert the 4 AA batteries, ensuring correct polarity (+/-).
- Close the battery compartment cover.
2. Initial Code Setting
- With the safe door open, press the internal reset button (usually a small red button on the inside of the door or near the hinge).
- The yellow indicator light on the keypad will illuminate.
- Enter your desired 3 to 8 digit PIN code on the keypad.
- Press the '#' or 'E' button to confirm. The yellow light will turn off, indicating the code is set.
- Test the new code with the door open before closing it.
3. Mounting the Safe (Optional)
For enhanced security, it is recommended to fix the safe to a wall or floor using the provided fixing bolt kit.
- Choose a suitable location, ensuring the mounting surface is solid and secure.
- Mark the drilling points through the pre-drilled holes inside the safe.
- Drill pilot holes into the wall or floor.
- Position the safe and secure it using the provided bolts and washers.
- Ensure the safe is firmly attached and cannot be easily removed.

Figure 4: The safe can be discreetly installed within furniture like a closet.

Figure 5: The safe can also be placed under a desk for convenient access.
Operating Instructions
1. Opening the Safe with PIN Code
- Enter your 3 to 8 digit PIN code on the keypad.
- Press the '#' or 'E' button to confirm.
- If the code is correct, the green indicator light will illuminate, and you will hear a beep.
- Within 5 seconds, turn the handle clockwise to open the safe door.

Figure 6: Entering the PIN code on the electronic keypad.
2. Opening the Safe with Mechanical Override Key
The mechanical override key provides emergency access in case of battery failure or a forgotten PIN code.
- Locate the keyhole cover on the keypad panel.
- Remove the cover.
- Insert the mechanical key into the keyhole and turn it counter-clockwise.
- Turn the handle clockwise to open the safe door.
- It is recommended to store the mechanical keys in a secure location away from the safe.
3. Closing and Locking the Safe
- Close the safe door.
- Turn the handle counter-clockwise until the door is securely latched.
4. Alarm Functionality
The integrated 130dB alarm will activate under the following conditions:
- Forced Attack: If the safe detects a forced entry attempt.
- Incorrect PIN Entry: After three consecutive incorrect PIN entries.
When activated, the alarm will sound for 1 minute. After two consecutive incorrect PIN entries, the alarm will sound for 1 minute, and the keypad will be locked for 3 minutes.

Figure 7: Integrated automatic locking system and alarm sequence.
Maintenance
1. Battery Replacement
When the red LED flashes during operation, it indicates low battery power. Replace the batteries promptly to ensure continuous operation.
- Open the safe door using your PIN or the mechanical key.
- Locate the battery compartment on the inside of the door.
- Remove the old batteries and dispose of them responsibly.
- Insert 4 new AA alkaline batteries, observing correct polarity.
- Close the battery compartment cover.
2. General Care
- Clean the safe exterior with a soft, damp cloth. Avoid abrasive cleaners.
- Do not expose the safe to extreme temperatures or humidity.
- Regularly check the mounting bolts for tightness if the safe is fixed.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Safe does not open with PIN. | Incorrect PIN entered; batteries are low or dead; keypad is locked. | Re-enter PIN carefully. Replace batteries. Wait 3 minutes if keypad is locked due to multiple incorrect entries. Use mechanical override key. |
| Alarm sounds unexpectedly. | Forced entry attempt; multiple incorrect PIN entries. | Enter correct PIN or use mechanical key to deactivate. Check for signs of tampering. |
| Red LED flashes during operation. | Low battery power. | Replace all 4 AA batteries immediately. |
| Keypad is unresponsive. | Keypad locked after incorrect entries; dead batteries. | Wait for 3-minute lockout period to expire. Replace batteries. |
Specifications
- Model: YEC/390/DB2
- Brand: Yale
- External Dimensions (H x W x D): 390mm x 350mm x 360mm (approx. 39 x 35 x 36 cm)
- Internal Dimensions (H x W x D): 380mm x 340mm x 310mm (approx. 38 x 34 x 31 cm)
- Weight: 10.6 kg
- Capacity: 40 Liters
- Material: Steel
- Lock Type: Electronic Keypad with Mechanical Override
- PIN Code: 3 to 8 digits
- Alarm: 130dB integrated alarm
- Power Source: 4 x AA Batteries (included)
- Mounting: Wall or Floor mountable (fixing kit included)
- Origin: China

Figure 8: Detailed dimensions, weight, and capacity of the Yale YEC/390/DB2 safe.
Warranty and Support
Warranty Information
This Yale product is covered by a manufacturer's warranty against defects in materials and workmanship. Please refer to the warranty card included with your purchase or visit the official Yale website for specific warranty terms and conditions applicable to your region.
Customer Support
For technical assistance, troubleshooting, or spare parts, please contact Yale customer support. Contact details can typically be found on the Yale official website or in the documentation provided with your safe.
When contacting support, please have your model number (YEC/390/DB2) and purchase information readily available.





