Includes all taxes

K8 is a fingerprint door lock with Longer and Larger Handle Panels, which can cover the door holes left by the old lock.
There are 2 versions of K8 : TT Lock Version / Tuya WiFi 8-language Version. According to your needs, choose a smart lock suitable for your home
Note: Tuya WiFi version supports system voice in 8 languages, but TT Lock version supports system voice in English only

Differences Between The Two Versions
Functions | TT Lock Version | Tuya WiFi Version | ||
Fingerprint / Password / IC card / Key / APP Unlock | Yes | Yes | ||
System Voice | English | Arabic / English / Indonesian / Portuguese / Russian / Spanish / Thai / Vietnamese | ||
Bluetooth unlock | Yes | No | ||
APP management | Yes | Yes | ||
Send temporary password remotely | Yes | Yes | ||
One-time password / Recurring password | Yes | No | ||
Time-limited password/Permanent password | Yes | Yes | ||
Remote authorized user unlocking | Yes | Yes | ||
Unlocking records | Yes | Yes | ||
Real-time viewing of unlocking records | Yes | Yes | ||
Mobile phone WiFi remote unlock | + Buy Extra G2 Gateway | Yes | ||
TT Lock Version | TT lock APP management | |||
Tuya WiFi Version | Tuya APP set up | |||

With Longer and Larger Handle Panels, which can cover the door holes left by the old lock.
Unlock methods: APP (Options: Tuya / TT Lock)/ Fingerprint / Password / Smart Card / Key Unlock
Tuya WiFi Version: 8 language voices (Arabic / English / Indonesian / Portuguese / Russian / Spanish / Thai / Vietnamese) to switch freely, easy to set up.
Temporary Password;Timed Password;Support Normal Open Mode (access free)
Support Doorbell function
24+ Sizes of Mortise Lock available

Do you trouble with the useless door hole left by the previous lock ?
K8 is with Longer and Larger Handle Panels than the other ordinary lock, which can cover the door holes left by the old lock.

Support Doorbell function

Unlock methods: APP (Options: Tuya / TT Lock)/ Fingerprint / Password / Smart Card / Key Unlock

Tuya WiFi Version--About Tuya APP





TT Lock Version-About TT Lock
The lock connect with the phone by Bluetooth.
You can open the lock / manage the lock (add user / delete user / set password and so on)
If add a gateway that can connect to Wifi (Gateway buy extra)
It is helpful for Hotel Management
For iOS and Android phone, If add a gateway G2 can connect to wifi, and work with Alexa and Google Assistant(Noted: Only USA/Canada/UK/Australia/France/ltaly/Brazil/India can support the Alexa and only the English country support the Google Assistant.)


Support WiFi unlock remotely from APPOrder TT Lock version and contact seller to buy gateway G2 extra. The smart lock can connect to WiFi and control by intelligent voice system with other smart home devices to achieve smart home.
For iOS and Android phone, If add a gateway can connect to wifi, and work with Alexa and Google Assistant
(Noted: Only USA/Canada/UK/Australia/France/ltaly/Brazil/India can support the Alexa and only the English country support the Google Assistant.)

Share e-Key
(The e-Key and usage time can be set in TTLock App.)

Share Password Anywhere
You can generate multiple types of passwords and share with others to get in your house when you are not at home.
Access Alert & Attendance Record
Record the opening time, method and personnel of each time. Also for company record employee attendance.

The password lock supports the anti-peeping password. You can enter any number before and after the correct password. Prevent others from peeping at the unlock code.

How to select the correct mortise lock size
We have over 24 different mortise lock size for choose, so please measure the old lock size follow this picture that you would know which size suit for your door. (once you select the correct size, you will very easy to replace the old lock)



Front panel x 1
Rear panel x 1
Mortise lock x 1(options)
Smart card x 5
Mechanical Key x 2
Screw Kit x 1

Payment Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are committed to providing a safe, secure, and seamless payment experience for our customers.
1. Accepted Payment Methods
We accept the following payment options:
Major Credit & Debit Cards (Visa, MasterCard, American Express)
Secure Online Payment Gateways (such as PayPal, Stripe, or other providers available at checkout)
Any additional payment methods displayed during checkout
All payments must be completed in full at the time of purchase.
2. Secure Transactions
All transactions are processed through encrypted and secure payment systems to protect your personal and financial information. We do not store your full payment details on our servers.
3. Currency
Prices are displayed in the currency indicated on the website. If you are purchasing from another country, your bank may apply currency conversion fees.
4. Order Confirmation
Once your payment has been successfully processed, you will receive an order confirmation email containing your purchase details.
5. Failed or Declined Payments
If your payment is declined, please verify your billing information or contact your bank. Orders will only be processed after successful payment confirmation.
6. Fraud Prevention
BILLIONS BIRDS reserves the right to cancel or refuse any order if fraud or unauthorised activity is suspected.
Delivery Policy – BILLIONS BIRDS
At BILLIONS BIRDS, we are dedicated to delivering your orders safely and efficiently.
1. Order Processing
All orders are processed within 1–3 business days after payment confirmation. Orders are not processed or shipped on weekends or public holidays.
2. Shipping Times
Estimated delivery times vary depending on your location:
Domestic Shipping: 3–7 business days
International Shipping: 7–15 business days
Please note that delivery times are estimates and may vary due to customs procedures, carrier delays, weather conditions, or other unforeseen circumstances.
3. Shipping Costs
Shipping fees are calculated at checkout based on your location and selected shipping method. Any customs duties, taxes, or import fees are the customer's responsibility.
4. Tracking Information
Once your order has been shipped, you will receive a confirmation email with tracking details (if available) so you can monitor your package.
5. Delivery Issues
If your order is delayed, lost, or arrives damaged, please contact us within 7 days of the expected delivery date. We will work with the shipping carrier to resolve the issue as quickly as possible.
6. Incorrect Shipping Information
Customers are responsible for providing accurate shipping details at checkout. BILLIONS BIRDS is not responsible for orders shipped to incorrect addresses provided by the customer.
Refund Policy – BILLIONS BIRDS
At BILLIONS BIRDS, customer satisfaction is our top priority. If you are not completely satisfied with your purchase, we’re here to help.
1. Return Eligibility
You may request a return within 14 days of receiving your order. To qualify for a return:
The item must be unused, unworn, and in the same condition as received.
The item must be in its original packaging.
Proof of purchase (order confirmation or receipt) is required.
Certain items may not be eligible for return, including clearance items, gift cards, or personalised/custom products.
2. Non-Refundable Items
The following items are non-refundable:
Final sale or discounted items
Gift cards
Items damaged due to misuse, negligence, or improper care
3. Return Process
To initiate a return, please contact our customer support team with your order number and reason for return. If your return is approved, you will receive instructions for returning the item.
Unless the item is defective or incorrect, customers are responsible for return shipping costs.
4. Refund Processing
Once we receive and inspect your returned item:
We will notify you of the approval or rejection of your refund.
If approved, the refund will be issued to your original payment method within 5–10 business days.
Please note that banks or payment providers may require additional time to process refunds.
5. Damaged or Incorrect Items
If you receive a damaged, defective, or incorrect item, please contact us within 7 days of delivery and provide clear photos of the product and packaging. We will arrange a replacement or full refund at no additional cost.
6. Late or Missing Refunds
If you have not received your refund:
Check your bank account again.
Contact your credit card company or payment provider.
If the issue persists, don't hesitate to contact our support team for assistance.
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