Introduction
This manual provides essential instructions for the safe and effective use of your Yale Y-MS0000NFP (DS-250) Medium Electronic Guest Safe. Please read all instructions carefully before installation and operation to ensure proper functionality and security.
The Yale Electronic Guest Safe offers a secure storage solution for valuables such as passports, jewelry, and cash. It features an electronic keypad for user-defined PIN codes and a master code for administrative access. The safe is designed with standard security features including an anti-bump solenoid and 16mm locking bolts.
Safety Information
- Important: Do not store the mechanical override keys inside the safe. Keep them in a secure location outside the safe.
- Ensure the safe is securely mounted to a wall or floor to prevent unauthorized removal.
- Keep the safe away from excessive moisture or direct sunlight.
- Do not attempt to force the safe open if the electronic lock malfunctions. Use the mechanical override key.
- Replace batteries promptly when the low battery indicator appears to avoid being locked out.

Image: Front view of the Yale Electronic Guest Safe, showing the keypad and a warning label indicating not to store keys inside the safe.
Package Contents
Verify that all items are present in the package:
- 1 x Yale Electronic Guest Safe (Y-MS0000NFP)
- 2 x Mechanical Override Keys
- 4 x AA Batteries
- 1 x Pack of Fixing Bolts (for securing the safe to a wall or floor)
- 1 x User Manual / Fitting Instructions (this document)
Setup
1. Initial Opening and Battery Installation
Upon receiving your safe, it will be locked. Use one of the provided mechanical override keys to open it for the first time and install the batteries.
- Locate the keyhole cover on the electronic keypad. This is usually a small removable panel or a rotating cover.
- Remove the keyhole cover to expose the keyhole.
- Insert one of the mechanical override keys into the keyhole and turn it clockwise to unlock the safe.
- While the key is turned, rotate the handle counter-clockwise to open the safe door.
- Inside the safe door, locate the battery compartment.
- Insert the 4 AA batteries, ensuring correct polarity (+/-).
- Close the battery compartment. The safe is now powered and ready for programming.
- Remove the mechanical key and store it in a secure location away from the safe.

Image: A detailed view of the electronic keypad, showing the numerical buttons, display, and the keyhole for manual override.

Image: The interior of the Yale safe with the door open, revealing the battery compartment and mounting holes.
2. Mounting the Safe
For enhanced security, it is recommended to secure the safe to a floor or wall using the provided fixing bolts.
- Choose a suitable location for mounting, ensuring it is a solid surface (e.g., concrete floor, wooden stud).
- Open the safe door. You will find pre-drilled holes on the back and/or bottom of the safe.
- Position the safe and mark the drilling points through the holes onto the mounting surface.
- Drill pilot holes into the marked points using an appropriate drill bit for your surface type.
- Align the safe with the drilled holes and insert the fixing bolts.
- Tighten the bolts securely to fasten the safe in place.
Operating Instructions
1. Setting a User PIN Code
The safe allows users to set a personal 3 to 8 digit PIN code.
- With the safe door open, press the red reset button located on the inside of the door (usually near the hinge). The keypad will beep, and the display will show "PROG".
- Enter your desired 3 to 8 digit PIN code on the keypad.
- Press the "START" button to confirm. The display will show "GOOD" indicating successful programming.
- Test the new PIN code with the door open before closing it.
2. Setting a Master Code (for Owners/Administrators)
A master code allows administrative access, useful for rental properties or hotels.
- With the safe door open, press the red reset button twice. The display will show "MASTER".
- Enter your desired 3 to 8 digit master code.
- Press the "START" button to confirm. The display will show "GOOD".
- Test the master code with the door open.
3. Opening the Safe with a PIN Code
- Enter your 3 to 8 digit user PIN code or the master code on the keypad.
- Press the "START" button. The display will show "OPEN" and the safe will unlock.
- Within 5 seconds, rotate the handle clockwise to open the safe door.
4. Closing and Locking the Safe
- Close the safe door.
- Rotate the handle counter-clockwise to engage the locking bolts. The safe is now locked.
5. Auto Lockdown Feature
If four incorrect PIN entries are made consecutively, the keypad will automatically lock down for 3 minutes. During this period, a 3-minute beep will sound. To stop the beep and reset the lockdown, use the mechanical override key to open the safe and press the inside reset button. This sequence will repeat after every four incorrect PIN entries.
Maintenance
Battery Replacement
The safe is powered by 4 AA batteries. When the battery power is low, the display will indicate "LOW BATT" or a similar warning. Replace the batteries promptly to ensure continuous operation.
- Open the safe door using your PIN code or the mechanical override key.
- Locate the battery compartment on the inside of the door.
- Remove the old batteries and dispose of them responsibly.
- Insert 4 new AA batteries, observing correct polarity.
- Close the battery compartment.
- Test the safe's operation with the new batteries.
Note: If batteries are completely depleted and you cannot open the safe electronically, use the mechanical override key.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Safe does not open with PIN. | Incorrect PIN entered; batteries are low or dead; keypad is in lockdown mode. | Re-enter PIN carefully. Replace batteries. Wait for lockdown period to end or use mechanical key. |
| Keypad is unresponsive. | Dead batteries; internal electronic fault. | Replace batteries. If issue persists, use mechanical key and contact support. |
| Forgotten PIN code. | User PIN forgotten. | Use the master code to open the safe, then reset the user PIN. If master code is also forgotten, use mechanical override key. |
| Safe beeps continuously. | Keypad is in auto-lockdown mode. | Wait for the 3-minute lockdown period to end, or use the mechanical override key to open the safe and press the internal reset button. |
Specifications
| Feature | Detail |
|---|---|
| Brand | Yale |
| Model Number | Y-MS0000NFP (YALYMS) |
| External Dimensions (HxWxD) | 250mm x 350mm x 250mm (9.84"H x 13.78"W x 9.84"D) |
| Internal Dimensions (HxWxD) | 190mm x 420mm x 300mm (Approximate, based on volume and external) |
| Capacity | 16 Liters |
| Lock Type | Electronic Keypad, Mechanical Key Override |
| Material | Alloy Steel |
| Color | Black |
| Mounting Type | Floor Mount (also suitable for wall mounting) |
| Power Source | 4 x AA Batteries (included) |
| Security Features | Anti-bump solenoid, 16mm locking bolts, Auto-lockdown after 4 incorrect PIN entries. |
| Item Weight | 0.25 Kilograms (8.8 ounces) - Note: This weight seems unusually low for a safe. Please verify actual product weight. |

Image: A diagram illustrating the external dimensions of the Yale Electronic Guest Safe, showing height and width measurements.
Warranty and Support
Your Yale Electronic Guest Safe comes with a 2-year manufacturer's warranty. This warranty covers defects in materials and workmanship under normal use.
For technical support, warranty claims, or further assistance, please contact Yale customer service through their official website or the contact information provided with your purchase documentation.
For more information, visit the official Yale website: www.yalehome.com





