NB-IoT Smart Padlock

NB IoT Smart padlocks improves the safety, security and controlled access of assets helping save companies time and money, and delivering peace of mind.

NB IoT Smart Padlock    

  • Waterproof for outdoor use IP67 rating (re-enforced stainless steel casing and armoured glass numberpad)

  • CE, FCC and NB IoT certified

  • Suitable for gates, sheds, storage boxes, electrical meters, garage doors, cabinets

  • Built-in alarm with anti-tampering sensors – three alert modes (lock activity, tamper, and forced entry) lets you know when someone is coming and going and communicates potential security threats with text notifications and alarm siren.

  • Licenced for use on the global NB IoT network

  • No external wiring

  • Battery status notifications

  • No onsite infrastructure required

  • NFC included for NFC card/NFC token use (use our digital keys app (Android 5.0 and above) to write to NFC cards/tokens - 3 NFC cards included per lock purchase)

  • Remote unlock over NB IoT network with our FREE digital keys smart phone app and Digital Keys Management Platform 

  • NFC unlock with digital keys app (select Android phones 5.0 and above, with NFC in the phones).

  • 2 Year Warranty

  • Synthetic Rubber Protective cover 

Smartphone unlocking and with keycards and PIN too

You can remotely unlock your NB-IoT smart padlock from anywhere with the click of a button. Use the Digital Keys app to make time-sensitive keycards too.

With day and time limits you can control, a scheduled digital key is perfect for anyone only requiring access for a short period, or anytime – generate digital keys and email it to co-workers, contractors, visitors in seconds. Unlock from anywhere!

How Digital Keys enables companies to manage all their assets with smartphone digital keys

Security you can trust

The padlock connects to the internet with NB-IoT technology which exists on the mobile networks giving you state of the art security and encryption features. With built in tampering sensors, get text messages if someone attempts to break open the padlock.

Live tracking and tracing

Keep posted on your staff, contractors, volunteers comings and goings with notifications to your phone every time your padlock is unlocked – history displays all activity of locking and unlocking. Data is also stored in the lock management software and can be downloaded as CSV, XCL files for data analytics.

QR Code/NB-IoT unlocking

Scan the QR code on the padlock to load the digital keys app, and scan again in the app so that your IP address can be checked to see if you are pre-authorised to unlock for the current date and time. If it all lines up, an unlock command is automatically issued to the padlock over the NB-IoT network and you can unlock the padlock.


Why choose NB-IoT smartlocks?

Remote unlocking from anywhere

Smartphone unlocking

Contactless unlocking

Most secure cellular technology

For use everywhere and anywhere

The NB-IoT smart padlock is waterproof and tamperproof



storage boxes

meter boxes

We help you solve your metal key access pain

Our infrastructure set up can be hosted on your cloud environment or in AWS in your own country so you can be sure you are in control of your data

We help solve your access control problems so you can be more efficient in your operations, save time and money and get more customers

We help your people get around smarter from place to place and asset to asset, no matter where they are located. 

An efficient system for your access management 

System Feature

Provided By

Learn More

NB-IoT Smartlock Cloud Platform

Hosted at Amazon Web Services in your local country (data retained in your country) or hosted in your own cloud environment (enterprise customers)

NB-IoT Network Connectivity

Provided by Local Mobile Network Operators (MNO)


256 Bit SSL, MFA, IAM (AWS), IPSEC/VPN, Mobile Network security features (MNO's) 2048 Bit RSA encryption (chipset)

Digital Keys Smartphone App

Provided by Digital Keys Ltd, or use our Developer API to add the Digital Keys app features such as NB-IoT unlock and NFC unlock, NFC keycard write to your own app.

Access Management Software

Provided by Digital Keys Ltd, or use our Developer API to add the access management features to your own customer facing software

NB-IoT Smartlock

Provided by Digital Keys Ltd. We buy top selling keycard lock casings off the shelf without PCB's (and insert our NB-IoT PCB's) to ensure the lock is top quality, strong and meets CE, FCC, ISO, RoHS certifications


Waterproof (IP67)

-50C to 60°C (designed for outdoor use) 20 to 99%RH



L10.0mm x W8.2mm x B4.7mm

Rod thickness W0.8mm L6.9mm


NB-IoT (part of 5G standards), NFC (local opening with keycards and NFC phones), LTE-M, CAT-M (2G/3G fallback)


0.9 Kg


4AA standard alkaline batteries

2 years life (approx) 4-5 openings a day.


NB IoT module - Ublox SARA - R410M 

NFC Mifare, CPU

SIM card

Nano iSIM on participating local mobile network operators


Stainless steel outer core with anti-tampering screws

Armoured glass numberpad

Synthetic rubber cover

Unlocking methods

PIN, Keycards (time-sensitive)

iOS, Android smartphone app unlocking, remote unlock in software

What's in the Box​

1 x NB IoT smart padlock

3 x NFC keycards

1 x SIM Card

1 x protective rubber cover

1 x User guide

You'll also need.....

To download the FREE Digital Keys App to activate your SIM card and subscription. You'll also need 4 AA standard alkaline batteries which you can get in any supermarket.

Set up NB-IoT Smart Padlock in 4 simple steps

Step 1

Download and open the Digital Keys app then follow the instructions

Step 2

Activate your NB-IoT smart padlock in the Digital Keys app

Step 3

Put your NB-IoT smart padlock in your desired locations (gate, box, etc)

Step 4

Start managing and controlling access of your NB-IoT smart padlock

NB IoT Smart Padlock FAQ's

We have our own app and software, do we have to use your app and software?

We have built API's so that you can add all the features of the Digital Keys apps and software to your own apps and software. Visit our API's page to learn more. To get a copy of our API's and to start building your integration email us at

When and where can I buy the NB IoT smart padlocks?

Our NB IoT smart padlocks will soon be available to purchase on our website or at your local distributors or local telco's. Subscribe to our newsletter by sending an email to to get ongoing updates to availability.

Will the NB IoT smart padlocks work in my country?

NB IoT networks have been rolling out in dozens of countries across the planet. Please check our page 'NB IoT Network Map' for country rollout details. Also please send us an email with your country and we will chase up with our telco partners about NB IoT network availability around you.

How strong/heavy duty/rugged is your NB IoT smart padlock?

The padlock casing we use in made of stainless steel with armored glass numberplate (to enable NB IoT signals and commands to penetrate). The casing is from a top selling RFID/GPS padlock (we use our own NB IoT PCB's), that has sold hundreds of thousands over the last few years for use on shipping containers, sheds, trailers etc, so it is heavy duty and can handle almost any conditions thrown at it.

Do you have discounts for bulk volume purchases?

Yes, please email us at to discuss your needs and wants.

How do you get such a long battery life (around 2 years) as compared to only a few months with other connected locks (e.g Wi-Fi/BLE)?

Our locks remain in sleep mode most of the time, conserving battery, and are only woken up for a couple of seconds when you need to use the lock (e.g to unlock it, get live audit). All other connected locks are constantly on and connected to the internet sucking up battery life.

Where does the data lie, and who controls the data of the NB IoT smart padlocks?

Our cloud servers are hosted at Amazon Web Services (AWS) in your local country. No one has access to your data except you. If you want to host the system on your local servers, please get in touch with us to discuss further at

Where is my data held and who controls it?

Your data is safely secured and managed at your telecommunication Company who you sign up with for the connectivity services. All our smart access system services and data rests with the telecommunication companies who follow strict data legislation, standards and policies to ensure the highest levels of data security, privacy and integrity. If you can trust the telecommunication companies with your mobile phones, and mobile data, then you can trust them for NB IoT smart access.

Is there ongoing costs to use the NB-IoT smart padlocks?

Yes, there are connectivity costs to use our NB IoT smart padlocks on local telecommunication companies mobile networks. The locks connect to mobile networks like mobile phones do. But unlike mobile phones, the smart padlocks use very little data - on average less than 5-10 MB a month. For example unlock commands and data retrievals (such as for the live audit) are around 8-10 bytes on average.This means we can take advantage of the lowest data plans offered by local mobile network operators for utilising their NB IoT networks. For example in some European countries you can pay a one-time fee of 10 Euros when you purchase our smart padlock and receive a data flat rate of 500MB to use over 10 years on Deutsche Telekom's NB IoT network - click here to see more. Thats right 10 Euros for 10 years. Prices depend on different carriers in different countries. Please check with your local carrier or our distributors for pricing, or send us an email if you would like to know more.

Connect with us!

Send us a message, request information, or talk to a Digital Keys representative