1. Product Overview
The Hornbill Smart WiFi Front Door Lock (Model Y4) offers multiple convenient and secure access options for your home, apartment, or office. This manual provides detailed instructions for installation, operation, and maintenance to ensure optimal performance.

Image: Hornbill Smart WiFi Front Door Lock components including the exterior unit, app interface, IC cards, and WiFi gateway.
2. Package Contents
Verify that all components are present in your package:
- Exterior Lock Assembly
- Interior Deadbolt Assembly
- Latch Mechanism
- Mounting Plate
- Installation Instructions (this manual)
- Screws (various sizes for installation)
- 2 IC Cards
- 3 Mechanical Keys
- WiFi Gateway
3. Installation Guide
3.1 Door Compatibility
The lock is designed to fit most standard doors. Ensure your door meets the following specifications:
- Door Thickness: 1-1/4" to 1-3/4" (32mm to 45mm)
- Backset: Adjustable to 2-3/8" (60mm) or 2-3/4" (70mm)
- Cross-bore Diameter: 2-1/8" (54mm)
- Compatible with both right-hand and left-hand doors.
Note: For metal doors, signal interference may occur, which can impact remote control functionality.

Image: Door preparation diagram illustrating required dimensions for installation.
3.2 Step-by-Step Installation
Installation typically requires only a screwdriver. Follow the voice prompts during basic digital lock setup.
- Remove Existing Lock: Carefully remove your current deadbolt and any associated hardware.
- Adjust Deadbolt Latch: Adjust the length of the deadbolt to either 2-3/8" or 2-3/4" as required by your door. Ensure the word "UP" on the deadbolt faces upwards and the deadbolt is in the retracted (unlocked) status.
- Install Deadbolt: Insert the deadbolt into the door edge. Secure it with the provided screws.
- Install Exterior Assembly: Place the exterior lock assembly onto the door, ensuring the spindle is vertical and the cable passes under the deadbolt. Do not insert the mechanical key during this step.
- Install Mounting Plate: Pass the spindle through the central hole of the mounting plate and the cable through the right bottom hole. The side with the words "Cable Hole" should face outside. Secure the mounting plate firmly with screws.
- Connect Cable: Plug the cable from the exterior assembly into the port on the interior assembly.
- Install Interior Assembly: Align the interior assembly with the mounting plate, ensuring the knob is vertical. Tighten the screws into the interior assembly.
- Insert Batteries: Open the battery cover on the interior assembly and insert 4 AA batteries (not included), observing polarity. Close the cover.
Video: Step-by-step guide on how to install the Hornbill Smart Lock Y4.
4. Operating Instructions
4.1 Unlocking Methods
The Hornbill Smart Lock Y4 offers versatile access with 8 unlocking methods:
- Fingerprint Recognition: Quick recognition in 0.1 seconds with high accuracy. Supports up to 100 fingerprints.
- Passcodes: Set up to 100 unique codes.
- APP Control: Lock and unlock remotely via the Smart Life APP.
- IC Cards: Use the provided IC cards for convenient tap-to-unlock. Supports up to 100 IC cards.
- Mechanical Keys: Traditional key access for backup.
- Alexa Voice Control: Integrate with Amazon Alexa for voice commands (requires gateway).
- Google Assistant: Integrate with Google Assistant for voice commands (requires gateway).
- Ekey/Remote Control: Share guest access and control remotely (requires gateway).

Image: Visual representation of the five primary unlocking methods.
4.2 Smart Life APP Integration
The included gateway allows for enhanced control and monitoring through the Smart Life APP:
- Lock and unlock the door remotely.
- Share temporary or scheduled guest access.
- View live access logs and usage history.
- Receive instant notifications on door status changes.
- Manage users and assign administrator roles.
Video: Instructions on how to pair the gateway with the smart lock for app control.
4.3 Security Features
- Auto-Lock: The lock can be configured to automatically lock after a set period (5-1800 seconds).
- Anti-Peeping Mode: Enter random digits before or after your actual passcode to prevent others from guessing your code. The keypad will temporarily lock for 3 minutes after 5 incorrect passcode attempts.

Image: Auto-lock and one-touch locking features.
5. Maintenance
5.1 Battery Management
The lock is powered by 4 AA batteries (not included) which can last up to 6 months. The Smart Life APP will provide low battery reminders, and you can monitor the battery status within the app.
- Replace batteries promptly when low battery alerts are received.
- Use high-quality alkaline AA batteries for optimal performance.
6. Troubleshooting
If you encounter issues with your Hornbill Smart Lock Y4, consider the following:
- Remote Control Issues on Metal Doors: If the lock is installed on a metal door, signal interference may occur, affecting remote control functionality. Consider repositioning the gateway or improving Wi-Fi signal strength.
- Keypad Lockout: If the keypad locks temporarily, it is due to multiple incorrect passcode attempts (Anti-Peeping Mode). Wait 3 minutes before trying again.
- Battery Issues: Check the battery status in the Smart Life APP. Replace batteries if they are low. Ensure batteries are inserted with correct polarity.
- App Connectivity: Ensure your smartphone is connected to a 2.4GHz Wi-Fi network (5G is not supported for initial setup) and Bluetooth is enabled when pairing the gateway.
For further assistance, refer to the Warranty & Support section.
7. Specifications
| Feature | Detail |
|---|---|
| Brand | hornbill |
| Model Name | Y4 |
| Lock Type | Biometric, Deadbolt, Keypad |
| Special Features | APP Control, Alexa, Fingerprint, Remote Access, WiFi Deadbolt |
| Material | Aluminum |
| Color | Black |
| Item Dimensions (L x W x H) | 7 x 3 x 7.7 inches |
| Item Weight | 2.38 pounds |
| Controller Type | Amazon Alexa, Android, Google Assistant, iOS |
| Control Method | App, Remote, Touch |
| Connectivity Protocol | Bluetooth, Wi-Fi |
| Batteries Required? | Yes (4 AA batteries, not included) |
8. Warranty & Support
Hornbill provides the following support for your Smart WiFi Front Door Lock Y4:
- 30 Days of Free Return & Exchange
- 1-Year Lock Warranty
- Lifetime Free Technical Support
For technical assistance or warranty claims, please contact:
- Email: service01@hornbilllock.com
- Toll Free: +1(877)760-4361







