Retrofit smart locks attach to the inside of an existing deadbolt, allowing homeowners to keep their current exterior hardware and keys while adding smartphone control and keyless access. Complete deadbolt replacements remove the existing lock and install a new smart deadbolt, often adding a keypad or touchscreen and requiring basic screwdriver installation.

Before choosing an easy-install smart lock, check that the door is a standard U.S. or Canadian entry door, measure the existing deadbolt and bore, and confirm whether an included adapter supports a 1½-inch small bore hole. Also verify whether the lock replaces the existing deadbolt, uses a physical key, and works with the project’s Wi-Fi, Z-Wave, or PowerG hub, app, or security panel.

Choose Wi-Fi smart locks when users want direct app access from anywhere, Z-Wave locks when the project already uses a compatible smart home or alarm hub, and security-panel wireless locks when the lock needs to connect with a compatible security panel. For an easy-install smart lock, confirm the door and deadbolt fit, the wireless network or hub is available, and the selected connection matches the customer’s existing system.

Easy install smart locks in this assortment are designed to replace or attach to existing deadbolts using a screwdriver, with battery operation and a 9V charging option on many models. Daily access can include keypad entry, smartphone or app control, voice assistants, and physical keys on models with a keyed cylinder, while key-free versions use codes or connected controls instead.