Slim - Fingerprint and Keyless Entry Smart Mortise Lock [43mm wide] (SDL-S1)

Model: SDL-S1
$618.55 $474.22 Save $144.33

  Delivery time 3-8 business days

  Ships to New Zealand

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Color: Black
Variant: Standard
Door Type - Backset: Swing - 28mm
4 in stock
Are you looking for a true Keyless Smart Door Lock Handle for your entrance doors?

✔️ Introducing the SDL-S1 Smart Slim 5-in-1 Lever/Handle - the ultimate solution for smart and secure access control in your home or office. Suitable for both swing and sliding doors. With a sleek, luxurious design and wireless installation, this weather-resistant aluminium alloy construction provides an elegant look for both internal and external doors.

✔️ Designed for narrow door stiles, this smart door handle is suitable for use on aluminum, metal, or wooden doors. With multiple mortise options available, it can accommodate most doors in the Australian market. Its sliding screw design allows for easy retrofitting to your existing mortise.

✔️ With the Wi-Fi Bridge upgrade, you can control access to your door even when you're away from home or the office. Monitor all activity remotely with ease, and enjoy peace of mind knowing your property is secure

  • Free standard shipping on all orders anywhere in New Zealand
  • Estimated standard delivery time 3-8 business days
  • Estimated express delivery 1-3 business days
100% No-Fuss Guarantee

If it doesn't meet your expectations or if you encounter any issues, please contact our support team for a quick resolution or a refund. No-Fuss.

Color: Black
Variant: Standard
Door Type - Backset: Swing - 28mm

Product information

Technical Terms

These are the some of the specialised terms we use.

Familiarising yourself with these terms will help you understand the terminology commonly used in the world of door locks.

[Image: Typical door lock on a door]

✔️ Backset
Distance between the edge of the door and the centre of the door lock.

✔️ Door Stile/Frame
The door stile/frame is the flat surface area where the smart door lock is mounted, and the minimum door stile refers to the minimum surface area required for a specific lock. Check the 'Fitment' section of each lock to find its minimum door stile requirement.

✔️ Mortise/Mortise Lock
A type of lock that is installed within a door, with the lock body embedded or recessed into a mortise pocket within the door. A mortise lock size usually refers to the Backset of that specific mortise.
For example, 'Swing - 28mm' = Mortise lock with a 28mm Backset for a Swing Door.

✔️ Latch
A spring-loaded mechanism that keeps the door closed when engaged and can be released by turning a doorknob or lever.

✔️ Deadbolt
A bolt that extends into the door jamb to prevent the door from being forced open.

✔️ Striker Plate/Strike Plate
The a metal plate that is installed on a door jamb or frame where the door latch or deadbolt extends into to keep the door securely closed.

✔️ Strike Box
The strike box is the plastic box installed behind the strike plate and is attached to the door frame with screws. When the door is closed, the latch or bolt on the lock extends into the strike plate box.

✔️ Keyless Entry
A feature that allows users to unlock a door without using a traditional key, typically using methods such as numeric keypads, fingerprint, or smartphone apps.

✔️ Keypad Entry
A type of keyless entry system that utilizes a numeric keypad for entering a PIN code to unlock the door.

✔️ Bluetooth Connectivity
A wireless communication technology that enables the smart lock to connect and communicate with other devices, such as smartphones or tablets. Bluetooth is short-range and usually about 3-7 meters.

✔️ Wi-Fi Connectivity
A wireless networking technology that allows the smart lock to connect to the internet, providing remote access and control capabilities.

Multiple ways to access your home

Lock or unlock your door without ever needing a physical key again.

Fob (Mifare 13.56 MHz)
TTLock App/Bluetooth
Mechanical Key
(* Wi-Fi Bridge Required)

See how it works

Quick Look

Summary of the features of this lock at a glance

Battery Powered

Working Voltage 6V

4 X Alkaline AA Batteries

Approx. 10 Months Usage

Low-battery warning

No Wiring or Electrician Required

User Capacity

200 Fingerprints

200 Key Cards/Fobs

150 Codes/Passcodes

Emergency Overrides

Mechanical Key Override.

Micro-USB Backup Power if batteries are dead.

Left/Right Handed

Reversible to suit both Left and Right handled doors.

Detailed How-To instructions are provided.

Passage Mode

Keep it unlocked for a specified period for easy passage.

Useful for office hours or when visitors come.

Splash Resistant

IP55 Rating.

Can withstand occasional water splashes caused by rain and wind.

Can be installed on External or Internal Doors that are covered by a roof or an eave.

Smart Home*

Amazon Alexa

Google Assistant


(* Wi-Fi Bridge Required)

Remote Access*

Remote unlocking

Remote locking

Generate passcodes remotely

Access logs remotely

(* Wi-Fi Bridge Required)


Basic Smart Lock size information. See the Specification section for more details.
If you need any other information, please contact us.

For Both Swing & Sliding Doors

SDL-S1 Slim is compatible with both swing and sliding doors, depending on the mortise lock body selected.

With multiple lock body options available, you can find the perfect fit for various door sizes commonly found in the Australian market.

How to select the correct lock body?

See the 'Fitment' section below and the 'Specification' section for detailed diagrams.

Additional Details
Mortise Technical Terms

- Mortise Backset = Distance from the start of the faceplate (including) to the centre of the square spindle hole

Total Mortise Width = This is the total width of the lock body; from the start of the faceplate (including) to the end of the lock body. This will determine the size of the pocket/cavity to be cut into the door.

See more 'Technical Terms'.



Door Types
Swing Doors & Sliding Doors

Door Thickness
35 mm - 65 mm
[Contact us for other door thickness requirements]

Door Stile/Frame
- Door Stile requirement depends on the mortise backset chosen. Use one of the options below to calculate it.

Using Easy Calculator

Use our quick 'Backset Calculator' to find the best mortise backset option based on your current door.

Using Size Chart
Door Type - Backset Minimum Door Stile Width Mortise Width / Cavity
Swing - 28mm 49 mm 45 mm
Swing - 30mm 51 mm 47 mm
Swing - 35mm 56 mm 52 mm
Swing - 50mm 71 mm 67 mm
Swing - 60mm 81 mm 77 mm
Sliding - 28mm 49 mm 43 mm
Sliding - 35mm 56 mm 50 mm
No Measurements?

- For new Aluminium Doors with a Narrow Stile (e.g. office front door), the most commonly used is a '30mm Backset'.
- For new standard doors with a Standard Stile (e.g. residential wooden door), the most commonly used is a '60mm Backset'.
- If unsure, please contact us or your door manufacturer to get door measurements and use our 'Backset Calculator' above.

Wi-Fi Bridge Option

Get even more from your SDL-S1 Slim.

Enable remote features

- Control and Monitor your smart door locks remotely.

- Remote unlocking, locking, passcode generation, and monitoring access records.

Smartphone notifications

- Receive smartphone notifications when someone unlocks the door.

Smart home integration

- Voice control using Amazon Alexa or Google Home

- Web API for custom/advanced integrations.

Control and connect with TTLock App

Customise settings, manage access, check access logs, share digital keys
and much much more..

Share access with guests

Enjoy seamless access sharing and enhanced convenience for your guests.

Airbnb Guests

Date and Time-limited codes for secure access during their stay. Effortless self-check-in for guests. All can be managed remotely (Wi-Fi) for your convenience.

Long-Term Tenants

Smartphone access or long-term codes. No more lost or duplicated keys.

Cleaners, Babysitters and Caretakes

Scheduled recurring access, eliminating the need for physical keys and waiting for them to arrive.

Tradesperson or Delivery Person

Effortless one-time access codes or unlock remotely (Wi-Fi) when they arrive.

Features in detail

Want to know more about the features of this digital lock?
Then we've got you covered in this section.

🟪  Voice Guide

A user-friendly voice guide to help you through the programming process and day-to-day operations.

🟪  Passage Mode

You can configure this smart door lock to keep the lock unlocked when having people over or keep a space open at certain times.

🟪  Auto-Locking

Set a time for the smart door lock handle to automatically lock after the door is closed. Auto-Lock mode disables the external/outer handle from unlocking the lock mechanism after the timeout.

🟪  Suitable for External and Internal Doors

It is suitable for both external and internal doors, provided the external door is covered by an eave or provided the lock is installed under a hood to shelter it from direct rain.

This lock is not suitable for outdoor gates which are fully exposed to the weather (See SDL-G2 for outdoor gates).

🟪  Sliding Screw Design

The top mounting screw hole is movable for easy retrofitting to existing holes on the door. This makes the installation so much easier if you are a DIYer.

If you already have a traditional mortise lock, you might be able to install this smart door lock with minimal changes or without replacing your existing mortise.

🟪  Anti-peep Touchscreen

Add random digits to protect your passcode from prying eyes. You can type in any number of random digits on the keypad, and can still gain access as long as the correct password is embedded in the longer set of numbers.

🟪  Long battery life

The Smart Door Lock is designed with energy efficiency in mind and can provide around 10 months of battery life.

The lock also includes a low-battery warning, so you'll know when it's time to replace the battery.

🟪  Micro-USB For Emergency Power & Mechanical Key

Use an external power bank to activate your smart lock even when the batteries are dead. Backup mechanical key for an emergency override.

🟪  Instant Fingerprint Identification

One of the best fingerprint/thumbprint door locks on the market. Superfast fingerprint recognition and super easy configuration.


Technical details about this smart lock


With 28mm Swing Mortise

With 30mm Swing Mortise

With 35mm Swing Mortise

With 50mm Swing Mortise

With 60mm Swing Mortise

With 28mm Sliding Mortise

With 35mm Sliding Mortise

Technical Parameters

Model No

Black or Silver

Door Thickness
35 - 65 mm

Door Handing
Reversible (Left and Right)

H 300mm x W 43mm x D 25 mm

Unlock Methods
TTLock App/Bluetooth, Fingerprint, Card (Mifare 13.56 MHz), Keypad/Code, Mechanical Key, Wi-Fi (Wi-Fi Bridge required)

Bluetooth 4.0, Wi-Fi (Wi-Fi Bridge required)

User Capacity
200 Fingerprints, 200 Cards, 150 Codes

Identification Time
Instant recognition under 0.1 seconds

User-defined 4-8 digit

Compatible Smartphone
iOS7.0 or above, Android 4.4 or above

Remote Access
Yes, Wi-Fi Bridge is required

Working Voltage
6 V (4 X Alkaline AA Batteries)

Working Temperature
External Assembly: -4 °F ~ 149 °F (-20 °C ~ 65 °C), Internal Assembly: 14 °F ~ 131 °F (-10 °C ~ 55 °C)

Battery Life
Approx. 10 Months (Average 10 times a day)

Compatible Smart Home Eco-system
Alexa and Google Assistant (Wi-Fi Bridge is required)

Hardware Type

Case Material
Aluminium Alloy

3 kg

Mechanical Key Override

Micro-USB Backup Power Interface

Keypad Backlight

IP Rating

12 Months


  • Interior Assembly
  • Exterior Assembly
  • Lock Body + Strike Plate
  • Backup Keys x 2
  • Key Fobs x 3 (Mifare 13.56MHz)
  • Screws
  • User Guide
  • Drill Template
  • Wi-Fi Bridge (Optional)

Additional Resources


Here are some of the frequently asked questions about this product

What is the purpose of the Wi-Fi Bridge?

The Wi-Fi Bridge enables you to control, manage and monitor your smart lock remotely using the App on your smartphone. If you don't have the Wi-Fi Bridge, you still can control your lock using the App within the Bluetooth Range.

How does Wi-Fi Bridge work?
Plug the Wi-Fi Bridge into a USB socket or USB power adapter and connect it to your home Wi-Fi in the TTLock app – then it is ready to be paired with your SDL smart door lock. It is recommended to place the Wi-Fi Bridge within 3-7 meters of the lock.
If I buy multiple locks, do I need 1 Wi-Fi Bridge for each lock?
No, a single bridge can be connected to multiple locks given they are all within the recommended 3-7 metre range.
Can I buy the Wi-Fi Bridge later?
Yes. You can buy it at a later date. But it's more cost-effective to buy it as a bundle.