Nuki Smart Lock Accessories Guide: Which Add-Ons Do You Really Need?

Your Nuki Smart Lock is already a powerful upgrade to your home, but the right accessories can take it from convenient to truly seamless. Whether you want to ditch keys entirely, automate your door for deliveries, or integrate with an existing intercom, there’s an add-on designed for you. In this guide, we’ll break down the most popular Nuki accessories—including the keypad-2-208683">Keypad 2, Door Sensor, Power Pack, Opener, and Fob—so you can choose exactly what fits your lifestyle.

We’ll cover each accessory’s purpose, ideal use cases, and key benefits. By the end, you’ll know which combination turns your smart lock into the perfect entry system for your home.

Keypad 2: Keyless Entry for Everyone

The Keypad 2 is arguably the most popular Nuki accessory. It mounts on your door frame or wall and lets you unlock your door with a PIN code—no smartphone or key required. This is perfect for family members who prefer a code, guests, or service providers you want to give temporary access. The Keypad 2 features backlit keys for nighttime use and weather-resistant construction for outdoor installation.

If you have multiple users or want a backup entry method, the Keypad 2 is a must-have. It also works seamlessly with the Nuki Smart Lock Pro (5th Gen) and other compatible models. For those who want even more convenience, the Keypad 2 NFC adds tap-to-unlock via compatible phones or cards.

• Tip: Mount the Keypad 2 on the door frame rather than the door itself to avoid wire routing issues.

Door Sensor: Know When Your Door Is Open or Closed

The Door Sensor is a small magnetic sensor that attaches to your door and frame. It tells your Nuki Smart Lock whether the door is open or closed, enabling smart automations like auto-lock when you leave and auto-unlock when you arrive. It also prevents the lock from engaging if the door is ajar, protecting your lock mechanism.

For anyone who wants true hands-free entry or enhanced security, the Door Sensor is a low-cost, high-value addition. It works with all Nuki Smart Locks and is easy to install with included adhesive.

• Tip: Pair the Door Sensor with Auto Unlock for a completely keyless experience.

Power Pack: Never Run Out of Battery Unexpectedly

The Power Pack is an external battery pack that connects to your Nuki Smart Lock to extend its battery life significantly. It’s especially useful for high-traffic doors or if you frequently use power-hungry features like Wi-Fi or Matter. The Power Pack provides up to six months of additional battery life and can be recharged via USB-C.

If you’re using the Smart Lock Ultra or Smart Lock Pro (5th Gen) and want peace of mind against battery drain, the Power Pack is a smart investment. It also serves as a backup power source during extended absences.

• Tip: Install the Power Pack when you first set up your lock to avoid opening the lock later.

Opener: Integrate Your Existing Intercom

The Opener is designed for apartment dwellers with an existing intercom system. It connects to your intercom and allows you to unlock the building door via the Nuki app, voice assistants, or even automatically when you arrive. You can also grant temporary access to delivery personnel.

If you live in an apartment and want to control both your unit door and the building entrance from one app, the Opener is essential. It works with most analog and digital intercoms and pairs with your Nuki Smart Lock for a unified experience.

• Tip: Check compatibility with your intercom model before purchasing the Opener.

Fob: Quick Access Without a Phone

The Nuki Fob is a small, keychain-sized device that unlocks your door with the press of a button. It’s ideal for children, elderly family members, or anyone who doesn’t carry a smartphone. The Fob uses encrypted radio communication and can be assigned to specific users with customized access schedules.

For a simple, reliable backup entry method, the Fob is hard to beat. It works with all Nuki Smart Locks and can be programmed via the app.

• Tip: Keep a Fob as a spare in your car or bag for emergencies.

Choosing the right Nuki accessories depends on your daily routine and who uses your door. For most households, the Keypad 2 and Door Sensor form a solid foundation for keyless, automated entry. If you live in an apartment, add the Opener. For extended battery life, the Power Pack is a wise choice. Explore our full range of Nuki accessories to build your perfect smart entry system.