Sifely Sifely Model O Deadbolt
Sifely Fingerprint Smart Deadbolt with Keypad - Model O Instruction Manual
Brand: Sifely | Model: Sifely Model O Deadbolt
1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Sifely Fingerprint Smart Deadbolt with Keypad, Model O. This smart lock offers multiple access methods including fingerprint, keypad code, mobile app, fob, and physical key, enhancing security and convenience for various environments such as homes, apartments, offices, and rental properties.
2. What's in the Box
Please verify that all components are present before beginning installation:
- Front Panel (Exterior Keypad)
- Back Panel (Interior Lock)
- Mounting Plate
- Deadbolt
- Strike Plate
- Physical Keys (2)
- Key Fobs (2)
- Installation Screws (various sizes for different steps)
- Quick Start Manual
- Installation Manual

Image: All included components for the Sifely Smart Deadbolt.
3. Specifications
| Feature | Detail |
|---|---|
| Brand | Sifely |
| Model Number | Sifely Model O Deadbolt |
| Lock Type | Biometric, Combination Lock, Deadbolt, Keypad |
| Material | Aluminum, Zinc |
| Item Dimensions (L x W x H) | 6.3 x 2.6 x 1.9 inches |
| Item Weight | 2 Pounds |
| Special Features | Anti-Peeping Password, Back-Lit Keypad, Auto-Lock, Fingerprint, Fob Unlock, One-Touch Lock, Passcode Unlock, Touchscreen, Weather Resistant |
| Controller Type | App Control, Keypad, Fingerprint, Code / Passcode, Remote Access, Automatic Locking, Voice Control (Alexa / Google) |
| Connectivity Protocol | Bluetooth, Wi-Fi (with optional Gateway) |
| Door Thickness Compatibility | 1 3/8" ~ 2 3/16" (35mm - 55mm) |
| Bore Hole Diameter | 2 1/8" (54mm) |
| Bore Hole Backset | 2 3/8" or 2 3/4" (60mm or 70mm) |
4. Setup and Installation
The Sifely Smart Deadbolt is designed for easy DIY installation. A Phillips head screwdriver and 4 AA batteries are required. It is recommended to install the lock with the door open or ajar. Do not close the door until batteries are inserted and the lock is fully tested.

Image: Door compatibility specifications for installation.
4.1. Installation Video Guide
Video: A detailed guide on how to install the Sifely Smart Deadbolt. This video covers all steps from preparing the door to final calibration.
4.2. Step-by-Step Installation
- Install the Deadbolt:
- Hold the deadbolt in front of the door hole to check if the T-shaped hole is centered. If not, adjust the bolt by rotating it to the end.
- Ensure the 'UP' arrow on the deadbolt is facing upwards.
- Install the deadbolt into the door hole and secure it using the screws from the 'STEP 1' screw package.

Image: Installing the deadbolt into the door frame.
- Install Exterior Keypad:
- Ensure the bump on the tailpiece of the exterior keypad is facing upwards.
- Slide the tailpiece into the T-shaped hole on the deadbolt.
- Route the cable under the deadbolt, ensuring the exterior keypad is facing outside.
- Install Mounting Plate:
- Thread the cable through the hole at the bottom of the mounting plate.
- Slide the tailpiece from the exterior keypad into the corresponding hole on the mounting plate.
- Align the guide posts of the mounting plate with the holes on the exterior keypad.
- Measure your door thickness using the provided scale card to select the correct screws from the 'STEP 3' screw package.
- Secure the mounting plate using the selected screws.
- Attach Wire Cable to Interior Lock:
- Remove the battery cover by pulling it upwards off the interior lock body.
- Connect the cable from the exterior keypad to the designated port on the interior lock.
- Insert any excess cable into the door hole to prevent pinching.
- Install Interior Lock:
- Insert the tailpiece on the exterior keypad into the T-shaped slot at the back of the interior lock.
- Secure the interior lock using the screws from the 'STEP 5' screw package.
- Perform Calibration for your door:
- Insert 4 AA batteries into the interior lock.
- On the exterior keypad, enter "123456#" to initiate the door handing process.
- When the bolts stop moving, the calibration is complete.
5. Operating Instructions
5.1. Unlocking Methods
- Fingerprint: Place your registered fingerprint on the sensor. The lock supports over 100 fingerprints.
- Keypad Code: Enter your programmed 4-6 digit code on the keypad. The lock supports over 100 codes, including custom, timed, one-time, and recurring codes.
- Mobile App: Use the Sifely app to unlock the door remotely (with optional Gateway) or via Bluetooth when nearby.
- Fob: Tap a registered key fob against the keypad to unlock.
- Physical Key: Use the provided physical keys as a backup.

Image: Unlocking the deadbolt using the fingerprint sensor.

Image: Managing passcodes via the Sifely app.

Image: Remote control and monitoring via the Sifely app.

Image: Various fob options for unlocking the deadbolt.
5.2. Locking Methods
- Auto-Lock: The lock can be configured to automatically lock after a set period following each entry.
- One-Touch Lock: Press and hold the '#' button on the keypad to lock the door from the outside.
- Interior Knob: Turn the interior knob to manually lock or unlock the door from the inside.

Image: Auto-lock and manual locking features.
5.3. Security Modes
- Privacy Mode: Engages a full lock from the inside, preventing external access even with valid credentials.
- Passage Mode: Keeps the door unlocked for continuous access during specific times or events.
- Anti-Peep Code: Enter random digits before or after your actual passcode to prevent others from guessing your code.
5.4. Smart Speaker Integration
The Sifely Smart Deadbolt is compatible with Amazon Alexa and Google Assistant for voice control. A Sifely Gateway (sold separately) is required for this functionality.

Image: Voice control integration with smart speakers.
Video: A brief overview of the Sifely Smart Lock Model O, demonstrating its features and ease of use.
6. Maintenance
6.1. Battery Replacement
The Sifely Smart Deadbolt operates on 4 AA batteries and offers up to one year of battery life. The lock will provide low battery alerts when replacement is needed. To replace batteries:
- Remove the battery cover from the interior lock body.
- Remove the old batteries.
- Insert 4 new AA batteries, ensuring correct polarity.
- Replace the battery cover.

Image: Battery life and low battery alerts.
6.2. General Care
To ensure optimal performance and longevity of your smart deadbolt:
- Avoid using abrasive cleaners or solvents on the lock's surface.
- Wipe the keypad and fingerprint sensor with a soft, dry cloth.
- Ensure the door frame and strike plate are free of obstructions.
7. Troubleshooting
| Problem | Possible Solution |
|---|---|
| Lock does not respond. | Check battery levels and replace if necessary. Ensure the cable connection between the exterior and interior units is secure. |
| Fingerprint not recognized. | Ensure your finger is clean and dry. Try re-registering your fingerprint. Ensure proper placement on the sensor. |
| Keypad code not working. | Verify the code is correct. Ensure the keypad is active (tap to light up). Try re-entering the code. |
| Auto-lock not engaging. | Check the auto-lock settings in the Sifely app. Ensure the door is fully closed. |
| Remote access not working. | Ensure the Sifely Gateway is properly installed and connected to Wi-Fi. Check the app's connection status. |
8. Warranty Information
Sifely products typically come with a limited manufacturer's warranty covering defects in materials and workmanship. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Sifely website. Keep your proof of purchase for warranty claims.
9. Support
For technical assistance, product inquiries, or customer support, please contact Sifely customer service through the following channels:
- Email: Refer to your Quick Start Manual for the support email address (e.g., cs@sifely.com).
- Online Resources: Visit the official Sifely website for FAQs, video tutorials, and additional support documentation.
- Sifely App: The mobile app often includes a support section or direct contact options.

Image: Sifely web portal for managing locks and accessing information.
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