How to Install eufy Familock S3 and Smart Display E10: Complete Setup Guide
By eufy - Built with Care | Home Security System & Robovacs | Published: 2026-08-23
Category: How-to Guides
Step-by-step guide to install and pair eufy Familock S3 with Smart Display E10, including wiring, mounting, app setup, and troubleshooting tips.
The eufy Familock S3 and Smart Display E10 combine to create a seamless smart entry system. The Familock S3 offers robust security with multiple unlock methods, while the Smart Display E10 provides a central hub for video calls, home automation, and monitoring. This guide walks you through the installation and setup process, ensuring you get the most out of your smart lock and display.

Whether you're a first-time smart lock user or upgrading your existing setup, this step-by-step guide covers everything from unboxing to final configuration. We'll also share troubleshooting tips for common issues, so you can enjoy a smooth installation experience.
What's in the Box
Before you start, unpack your eufy Familock S3 and Smart Display E10. Ensure you have all the components: the lock body, deadbolt, mounting plate, screws, key fobs, and the display unit with its stand. Also, check that you have the required tools: a screwdriver, drill (if needed), and a level.
It's important to verify that your door's thickness and bore hole size are compatible with the Familock S3. Most standard doors will work, but you can measure to be sure. The Smart Display E10 comes with a power adapter and mounting bracket for wall or tabletop use.
- Check compatibility: door thickness between 1.3 and 2.2 inches and a 2-1/8 inch bore hole.
- Keep the packaging until installation is complete in case you need to return any parts.
Installing the eufy Familock S3
Start by removing your existing deadbolt and lock. Insert the new deadbolt into the door, ensuring the latch faces the correct direction. Secure it with the provided screws. Next, attach the mounting plate to the interior side of the door, aligning the screw holes with the deadbolt.
Slide the exterior keypad assembly onto the mounting plate and secure it with the included screws. Then, attach the interior assembly, making sure the cable connects properly. Test the lock mechanism by turning the thumb turn and using the keypad with the default code.
- Use the included template to mark screw holes accurately.
- Ensure the lock is aligned vertically to avoid binding.
Setting Up the Smart Display E10
The Smart Display E10 is your command center. Place it near a power outlet or mount it on the wall using the bracket. Connect the power adapter and turn it on. The display will prompt you to select a language and connect to Wi-Fi.
Download the eufy Security app on your smartphone and create an account or log in. In the app, tap 'Add Device' and select 'Smart Display E10'. Follow the on-screen instructions to pair the display with your Wi-Fi network and your eufy account.
- Place the display within range of your Wi-Fi router for a stable connection.
- If you have a 2.4 GHz network, use it for better compatibility.
Pairing Familock S3 with Smart Display E10
To pair the Familock S3 with the Smart Display E10, open the eufy Security app and go to 'Devices'. Select the Familock S3 and tap 'Add to Display'. The display will show a pairing code. Enter this code on your phone to confirm.
Once paired, you can control the lock directly from the display screen. You'll also receive notifications when someone locks or unlocks the door. The integration allows you to use the display as a video intercom when someone rings the doorbell (if you have a compatible doorbell).
- Ensure both devices are on the same network during pairing.
- If pairing fails, restart both devices and try again.
Configuring Access and Settings
Now that your devices are paired, customize your access settings. You can create up to 100 unique access codes for family members, guests, or service providers. Set schedules to allow access only during certain hours, and receive real-time alerts for any lock activity.
The Smart Display E10 also allows you to manage multiple locks if you have other eufy devices. You can create automation, such as having the display show a live view of your front door when the lock is unlocked, if you have a compatible camera.
- Use temporary codes for visitors and revoke them after their stay.
- Enable two-factor authentication in the app for added security.
Troubleshooting Common Issues
If your lock is not responding, check the battery level. The Familock S3 uses four AA batteries, and low batteries can cause issues. Replace them if necessary. Also, ensure the lock is properly aligned; misalignment can cause the latch to stick.
For the Smart Display E10, if you experience connectivity issues, move the display closer to your router or restart your router. If the display is unresponsive, perform a factory reset by holding the reset button for 10 seconds. You can then set it up again.
- Regularly clean the keypad to prevent dust from interfering with touch sensitivity.
- Update the firmware of both devices via the app to ensure optimal performance.
Installing the eufy Familock S3 and Smart Display E10 is a straightforward process that enhances your home's security and convenience. With this guide, you can complete the setup in under an hour and enjoy features like remote access, video intercom, and smart automation. For more smart home solutions, explore the eufy store for compatible devices like the eufy Video Doorbell Chime 2 to extend your system.




