1. Product Overview
The Riddost 4.2 Cub Large Fireproof Home Safe is designed to provide secure storage for your valuables and important documents. Featuring heavy-duty alloy steel construction, a dual safety key lock, and an LCD screen, this safe offers enhanced protection against theft and environmental hazards like fire and water.

Image 1: Front view of the Riddost 4.2 Cub Large Fireproof Home Safe.
2. What's in the Box
Please check the contents of your package against the list below:
- Safe box x 1
- Fireproof bag x 1
- Pads x 4
- Emergency battery box x 1
- Screw anchors x 4
- Master key x 2
- Emergency key x 2
- Lock box key x 2
- User manual x 1

Image 2: Visual representation of the safe box and its included accessories.
3. Setup Instructions
3.1 Initial Opening
When opening the safe for the first time, ensure the emergency key and master key are outside the safe. These keys are typically found in the accessory bag.
- Insert the master key into the main lock hole.
- Insert the emergency key into the emergency keyhole.
- Turn both the master key (clockwise) and the emergency key (counter-clockwise) simultaneously.
- While holding the keys turned, rotate the handle to open the door.
- Once open, install 4 x 1.5V AA batteries into the battery compartment located on the top surface of the door.

Image 3: Diagram illustrating the two methods of opening the safe: using both keys, or using the master key with a digital password.
3.2 Setting Date and Time
- With the safe door open, press the '*' button on the keypad.
- Use the number keys to enter the current year, month, and day.
- Press the '*' button again to confirm each entry.
- Enter the current hour and minute.
- Press the '*' button to save the time.
3.3 Changing the Password
- With the safe door open, locate the red reset button on the inside edge of the door.
- Press the red button once. The LCD screen will display 'SET'.
- On the keypad, enter your new 3-8 digit password.
- Press the '#' button to confirm and save the new password.
4. Operating Instructions
4.1 Opening with Password and Master Key
- Insert the master key into the main lock hole and turn it clockwise.
- Enter your 3-8 digit password on the keypad.
- Press the '#' button to confirm. The LCD screen will display 'OPEN'.
- Rotate the handle to open the door.
4.2 Closing and Locking the Safe
- Close the safe door firmly.
- Rotate the handle counter-clockwise to engage the locking bolts.
- Turn the master key counter-clockwise and remove it.
4.3 Emergency Power Supply
If the internal batteries are depleted and you cannot open the safe with the password, use the external battery box:
- Insert 4 x 1.5V AA batteries into the external battery box.
- Plug the external battery box cable into the socket located on the keypad panel.
- The safe will now be powered, allowing you to open it using the password and master key method.

Image 4: The external battery box providing temporary power to the safe.
5. Features and Internal Organization
The Riddost safe is designed with several features to enhance security and organization:
- Lockable Inner Cabinet: A separate, smaller compartment inside the safe provides additional security for highly sensitive items.
- Adjustable/Removable Shelf: The main compartment includes a shelf that can be adjusted to different heights or removed entirely to accommodate items of various sizes.
- Key Hooks: Convenient hooks are located on the inside of the door for organizing keys or small hanging items.
- Built-in Lighting: An internal light illuminates the safe's interior when the door is opened, improving visibility.
- Fireproof Document Bag: A fireproof and waterproof bag is included to offer extra protection for critical documents.

Image 5: Interior of the safe showing the lockable inner cabinet, adjustable shelf, and key hooks.

Image 6: The included fireproof document bag, designed to protect important papers.
6. Installation
For enhanced security, the safe can be bolted to a floor or wall.
- Choose a suitable location for installation.
- Using the provided screw anchors, mark and drill holes in the desired mounting surface (floor or wall).
- Align the safe with the drilled holes and secure it using the screw anchors.

Image 7: Visual guide for bolting the safe to a wall or floor.
7. Maintenance
7.1 Battery Replacement
The safe requires 4 x 1.5V AA batteries. When the battery is low, the LCD screen will display 'L-BAT'. Replace batteries promptly to ensure continuous operation.
- Open the safe door.
- Locate the battery compartment on the top surface of the door.
- Remove the cover and replace all four AA batteries.
- Close the compartment cover.
Note: Do not store the emergency key or master key inside the safe's main compartment. Keep them in a secure, separate location.
7.2 General Care
- Clean the safe's exterior with a soft, damp cloth. Avoid abrasive cleaners.
- Regularly check the locking bolts and hinges for any signs of wear or damage.
- Ensure the safe is kept in a dry environment to prevent moisture damage.
8. Troubleshooting
8.1 Alarm System
The safe is equipped with a smart alarm system that triggers under the following conditions:
- Incorrect Password: If an incorrect password is entered 3 consecutive times, a 70dB alarm will sound for 60 seconds.
- Vandalism/Impact: If the safe is violently knocked, hammered, drilled, or pried, the alarm will activate.
- Unauthorized Handling: Any unauthorized movement or tampering with the safe will trigger the alarm.
To silence the alarm, enter the correct password or use the master key to open the safe.

Image 8: Illustration of the safe's smart alarm system, activated by incorrect password attempts or physical tampering.
8.2 Safe Will Not Open
- Dead Batteries: If the LCD displays 'L-BAT' or is blank, replace the internal batteries or use the external battery box.
- Incorrect Password: Ensure you are entering the correct 3-8 digit password. If unsure, use the emergency key method.
- Keys Not Fully Turned: Ensure both the master key and emergency key (or master key and handle after password entry) are fully turned in the correct directions.
9. Specifications
- Brand: Riddost
- Lock Type: Key, Digital Keypad
- Color: Black
- Capacity: 4.2 Cubic Feet
- Material: Alloy Steel
- Special Features: Alarm System, Fireproof, Waterproof
- Mounting Type: Floor Mount, Wall Mount
- Included Components: Bolts, Keys
- Alarm: Anti-theft
- Water Resistance Level: Waterproof
- Item Weight: 77.3 pounds
- Product Dimensions: 30 x 20 x 17 inches
- Item Model Number: 8eb35bf9-acaa-4107-a415-dc88437f8be6
10. Official Product Videos
Riddost Large Home Safe Fireproof Waterproof
Video 1: An overview of the Riddost Large Home Safe, highlighting its fireproof and waterproof features.
Safe Box with Double Safety Key Lock and LCD Display
Video 2: Demonstrates the double safety key lock mechanism and the functionality of the LCD display on the safe box.
11. Warranty and Support
For warranty information or customer support, please refer to the contact details provided with your purchase or visit the official Riddost website. Keep your purchase receipt for any warranty claims.
