1. Product Overview
The JESSTTI Keyless Entry Door Lock with Keypad offers a secure and convenient way to manage access to your property. This smart lock provides multiple entry methods, including passcodes, IC cards, and traditional backup keys. Designed for durability and ease of use, it features an anti-peep password function, an interchangeable handle, and a backlit keypad for visibility in low light conditions.

Figure 1.1: User interacting with the keypad of the JESSTTI Keyless Entry Door Lock.
Key Features:
- Multiple Access Methods: Passcode, IC Cards, Backup Keys, FOB Unlock, NFC Unlock.
- Anti-Peep Passcode: Enter random digits before or after your actual code to prevent unauthorized viewing.
- Interchangeable Handle: Compatible with both left and right-handed doors.
- Durable Construction: Made from high-quality zinc alloy for reliability and resistance to wear.
- Automatic Locking: Features a 6-second auto-lock function for enhanced security.
- User Capacity: Supports up to 100 user codes (20 one-time, 80 fixed).
Video 1.1: Overview of the Keypad Door Lock with Handle features and operation.
2. Setup and Installation
This section provides instructions for installing your JESSTTI Keyless Entry Door Lock. Ensure you have all components listed in the package contents before beginning.
Package Contents:
- 1 x Keyless Entry Door Lock
- 2 x Door Handles
- 1 x Latch
- 1 x Instruction Manual (this document)
- 1 x Pair of Gloves
- 2 x Backup Keys
- 3 x Door Cards (IC Cards)
- 1 x Screwdriver
- 1 x Door Stopper

Figure 2.1: All included components for the JESSTTI Keyless Entry Door Lock.
Door Compatibility:
- Door Thickness: 1-3/8 inches to 2-1/8 inches (35 to 55mm)
- Adjustable Latch: 2-3/8 inches to 2-3/4 inches (60 to 70 mm)
Installation Steps:
- Prepare the door by ensuring it meets the thickness and latch specifications.
- Install the latch into the door edge.
- Attach the exterior and interior handle assemblies, ensuring proper alignment.
- Secure the lock with the provided screws using the screwdriver.
- Insert the required batteries (not specified in JSON, typically AA or AAA).
- Test the mechanical operation of the handles and latch.
- Proceed to initial programming as per the detailed instructions in the included manual.
3. Operating Instructions
This section details how to use the various access methods and features of your JESSTTI Keyless Entry Door Lock.
Unlocking with Passcode:
- Press any key to activate the keypad.
- Enter your programmed passcode.
- Press the '#' key to confirm.
- The lock will unlock, and you can turn the handle to open the door.

Figure 3.1: Keypad with anti-peeping passcode functionality.
Anti-Peep Passcode Feature:
To enhance security, you can enter random digits before and/or after your actual passcode. For example, if your code is 123456, you can enter 987123456012#.
Unlocking with IC Card (FOB/NFC):
- Present a programmed IC card (or compatible NFC device/FOB) to the card reader area on the lock.
- The lock will emit a confirmation sound/light.
- Turn the handle to open the door.
Unlocking with Backup Key:
In case of battery depletion or electronic malfunction, use the physical backup key. The keyhole is discreetly located. Refer to the included manual for specific keyhole access instructions.

Figure 3.2: Location of the hidden keyhole for emergency access.
Automatic Locking (Auto-Lock):
The lock is configured to automatically re-lock approximately 6 seconds after being unlocked. This feature ensures your door is always secured after entry or exit.

Figure 3.3: Illustration of the auto-lock mechanism engaging.
Mute Mode:
The lock features a mute mode to silence operational sounds, which can be useful in quiet environments or during specific hours. Refer to the full instruction manual for steps to activate/deactivate mute mode.

Figure 3.4: Mute mode icon indicating silent operation.
4. Maintenance
Proper maintenance ensures the longevity and optimal performance of your keyless entry door lock.
Battery Replacement:
The lock is equipped with a low battery indicator. When the indicator activates, replace all batteries promptly to avoid loss of function. Use high-quality alkaline batteries for best performance.

Figure 4.1: Visual representation of the low battery indicator.
Emergency Power Supply:
If batteries deplete completely before replacement, the lock features a backup power connector (e.g., USB-C port) to temporarily power the unit for emergency access. Connect a standard power bank to this port to provide temporary power.

Figure 4.2: Location of the backup power connector for emergency use.
Cleaning:
Clean the lock's exterior with a soft, damp cloth. Avoid abrasive cleaners or solvents that could damage the finish or electronic components.
5. Troubleshooting
This section addresses common issues you might encounter with your JESSTTI Keyless Entry Door Lock.
| Problem | Possible Cause | Solution |
|---|---|---|
| Lock does not respond to keypad input. | Dead batteries. | Replace batteries. Use the backup power connector if necessary. |
| Passcode error warnings. | Incorrect passcode entered. | Re-enter the correct passcode. Ensure no random digits are accidentally included unless using the anti-peep feature. |
| Lock does not engage/disengage smoothly. | Misalignment during installation or obstruction. | Check door alignment and ensure no foreign objects are obstructing the latch or bolt. Re-check installation steps. |
| IC card not recognized. | Card not programmed or damaged. | Ensure the IC card is correctly programmed. Try another programmed card. If issues persist, reprogram the card. |
| Lock consumes batteries quickly. | Low-quality batteries, frequent usage, or internal issue. | Use high-quality alkaline batteries. If the issue persists despite new batteries and moderate use, contact customer support. |
6. Specifications
| Feature | Detail |
|---|---|
| Brand | JESSTTI |
| Model Number | ab11404b-e473-4c0c-bb53-95673075d19a |
| Lock Type | Keypad |
| Material | Metal (Zinc Alloy) |
| Color | Satin Nickell |
| Item Dimensions (L x W x H) | 10.2 x 8.3 x 3.6 inches |
| Door Thickness Compatibility | 1-3/8'' to 2-1/8'' (35 to 55mm) |
| Adjustable Latch | 2-3/8 inches to 2-3/4 inches (60 to 70 mm) |
| Recommended Uses | Front doors, Bedroom doors, Office doors, Garage doors, Residential and Commercial purposes |
| Special Feature | Adjustable, Backlight, Anti-peep Password, Mute Mode, Auto-Lock |
| Included Components | Lock, 2 Handles, Latch, Manual, Gloves, 2 Keys, 3 Door Cards, Screwdriver, Door Stopper |
7. Warranty and Support
Warranty Information:
Specific warranty details for the JESSTTI Keyless Entry Door Lock are typically provided with the product packaging or can be found on the manufacturer's official website. Please retain your proof of purchase for warranty claims.
Customer Support:
For technical assistance, troubleshooting beyond this manual, or warranty inquiries, please refer to the contact information provided in your product packaging or visit the official JESSTTI website. When contacting support, please have your product model number (ab11404b-e473-4c0c-bb53-95673075d19a) and purchase details ready.