Auslock Slim Series S31B — Hinged Door (AUSS31B-Hinged)
A slim stainless-steel smart lock engineered for hinged (swing) doors. S31B combines a fast fingerprint reader, illuminated keypad and card reader with app control, plus optional Wi-Fi via a Gateway for remote access. The compact panels and adjustable mounting make it a clean upgrade for modern homes, rentals and offices.

If your door has a narrow frame or tight stile, you may want to explore our range of slim profile smart locks designed specifically for aluminium and narrow-frame doors. These options can suit different door types, backsets, and handle styles.
View all slim-style smart locks for narrow frame doors
Key Features
- Slim stainless-steel (SS304) body with modern, minimal look
- Touch keypad and high-speed fingerprint reader for quick entry
- App control with shareable e-keys; remote unlock via optional Gateway
- Low-battery warning and USB-C power-bank emergency override
- DIY install with adjustable sliding screw-casing to suit existing holes
Access & Tech Features
*Voice control available when paired with a Gateway.
Suitable Uses
- Residential hinged (swing) doors
- Holiday rentals/Airbnb (share e-keys & time-bound PINs)
- Office and shared-workspace doors
- Aluminium, timber and uPVC doors (hinged)
Specifications
- Item Code: AUSS31B-Hinged
- Material: Stainless Steel 304
- Panel Size (Front/Back): 280 × 38 × 25 mm
- Door Thickness: 30–80 mm
- Power: 6 V (4 × AA); low-power alarm at < 4.5 V
- Operating Temp/Humidity: −30 °C to 60 °C; 20–90% RH
- Connectivity: Bluetooth; Wi-Fi via optional Gateway
- Reset: Press reset button under battery cover (5 s), then enter 000# on keypad
- Mounting: Adjustable sliding screw-casing (55–100 mm from spindle)
What's In The Box
- Front panel ×1, Back panel ×1, Mortise ×1
- Strike ×1, Mechanical keys ×2, IC cards ×3
- Square shafts ×2, Spring ×1
- Fixing screws set 1 ×3, Sliding screw casings ×3
- Waterproof rubber plates ×2, Sliding screws ×2, Fixing screws set 2 ×4
- User manual ×1 (Gateway ×1 optional)
Available Finish Options
-
Silver
AUSS31B-Hinged/Sil -
Black
AUSS31B-Hinged/Blk -
White
AUSS31B-Hinged/Wht -
Gold
AUSS31B-Hinged/Gld -
Grey
AUSS31B-Hinged/Gry
Item Code Family — Auslock Slimline Locks
This Auslock product is backed by a 12-month limited manufacturer’s warranty covering defects in materials and internal electronic components under normal residential use. All warranty claims are handled by Terry’s Tradies Pty Ltd — contact us in the first instance and we’ll take care of it from there. View our Returns & Warranty policy
For manuals, installation guides and more, visit our Auslocks PDF Resources page.

Auslock Warranty
All Auslock products purchased through Terry’s Tradies Pty Ltd (trading as Terry’s Gold Coast Smart Locks and its associated websites and subsidiaries) are backed by a 12-month limited manufacturer’s warranty. If something isn’t right, contact us first � we manage all warranty assessments on your behalf and will work with you to get it resolved.
Warranty Summary
How to Make a Claim
- Contact Terry’s Tradies Pty Ltd at your original place of purchase with a description of the fault.
- Have your proof of purchase ready (receipt or order confirmation).
- Provide clear photos and/or video of the defect � this is required before any assessment can begin.
- We may ask you to complete troubleshooting steps or a technical support form before the item is returned. Do not send the product back without our written approval.
- If the claim is approved, we will arrange the next steps with you directly � including return freight where applicable.
What the Warranty Doesn’t Cover
The following are not covered under the Auslock manufacturer’s warranty:
- Incorrect or improper installation
- Door or frame misalignment
- Incorrect mortise, latch, or backset selection
- Installation on doors outside the product’s specifications
- Environmental exposure beyond the product’s stated IP rating
- Water ingress not consistent with the product’s IP rating
- Power surge, fire, flood, lightning, or other natural disaster
- Cosmetic damage or normal wear and tear
- Battery misuse or leakage
- Forced entry, vandalism, or tampering
- Unauthorised modification
- Use of non-Auslock components
- Commercial or high-traffic use (unless approved in writing)
Rechargeable battery products (Models A01, A02, A03, A519, A619): Battery-related damage is excluded where a non-certified charger, fast charger, incorrect voltage (outside 5.2V / 2A), third-party battery, or unsuitable charging environment has been used.
Change-of-Mind Returns
Change-of-mind returns are accepted at our discretion and subject to the manufacturer’s return conditions. If you’ve changed your mind, contact us within 14 days of receiving your order and we’ll let you know if a return is possible and what applies.
To be eligible, products must be:
- Unused and uninstalled
- Not powered on, activated, paired, programmed, or configured in any way
- In original, fully sealed condition with all packaging, accessories, and components
Where a return is approved, a 20% restocking fee applies and return shipping is at your cost. Products that have been installed, powered on, or had any credentials registered are not eligible for return.
Australian Consumer Law
Our goods come with guarantees that cannot be excluded under the Australian Consumer Law (ACL). You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have goods repaired or replaced if they fail to be of acceptable quality and the failure does not amount to a major failure. Nothing in this policy limits or excludes your rights under the ACL.
It can be overwhelming with all the choices out there. We can help! We are experts with decades of experience in fitting locks of all types, not just Smart Locks. It is a free service we offer, and with just some photos and a few minutes of your time you can get expert advice and product recommendations tailored precisely to suit your needs.
Click on the image below to begin your expert Smart Lock consultation