Upgrading to a smart door lock shouldn't be complicated by sizing issues. Before installing a Bold smart lock, precise measurement of your existing door hardware is essential. The company's standardized design with adjustable components ensures compatibility with most residential doors when properly measured.

• Tape measure or ruler

1. Identify the center point: Locate your existing lock's central screw hole as the reference point.
2. Measure interior distance: From the center point to the door's interior edge.
3. Measure exterior distance: From the center point to the door's exterior edge.
4. Account for additional hardware: Include any security features (such as anti-theft devices) that might affect total lock length requirements.

Bold smart locks feature adaptable exterior components to accommodate different door thicknesses:

• Standard lengths: 30mm or 50mm
• Extension options: +5mm, +10mm, or +15mm
• Example: The SX33 model can extend from 30mm to 45mm using included adapters.

• Safety margin: Maintain at least 30mm between the lock's center hole and door frame interior to prevent interference with the thicker interior knob (47mm diameter, 39.5mm depth).
• Sliding doors: The 39.5mm interior knob depth may affect sliding door operation - verify clearance before installation.

• Diameter: 32mm
• Depth: 32.6mm

• Diameter: 47mm
• Depth: 39.5mm

Note: The interior knob's greater thickness requires sufficient clearance for proper operation.

A: Use the included adapters to extend the exterior module length as needed.

A: Standard tools (screwdrivers, wrenches) typically suffice - consult the manual for specifics.

A: Verify operation through all access methods (key, mobile app) and check for proper alignment with the door frame.

The industry continues evolving with several emerging trends:

• Advanced biometric authentication (facial/iris recognition)
• Enhanced smart home integration
• Improved security against physical and digital threats
• Customizable designs and functionality

When selecting a smart lock, evaluate:

• Security certifications and features
• Access method options
• Door compatibility
• Manufacturer reputation
• Price relative to features

To ensure optimal performance:

• Clean regularly with a soft, dry cloth
• Protect from moisture exposure
• Replace batteries proactively
• Inspect mechanical connections periodically
• Install firmware updates when available