--- title: Passcode Types description: Passcode types for managing 33 Lock smart locks in the TTLock app. --- [Skip to content](https://help.33lock.com/passcode-types#main-content) [![](https://help.33lock.com/hs-fs/hubfs/v%20(Dark%20BG%20variant)%20Logo%20(5)-1.png?width=160&height=80&name=v%20(Dark%20BG%20variant)%20Logo%20(5)-1.png)](https://www.33lock.com) - [PRODUCTS](https://www.33lock.com/products) - [PARTNERS](https://www.33lock.com/partners) - [ABOUT US](https://www.33lock.com/about) Open main navigation Close main navigation - [PRODUCTS](https://www.33lock.com/products) - [PARTNERS](https://www.33lock.com/partners) - [ABOUT US](https://www.33lock.com/about) How can we help you? - There are no suggestions because the search field is empty. 1. [33 Lock Help Documentation](https://help.33lock.com/?hsLang=en-us) 2. [Managing Devices](https://help.33lock.com/managing-devices?hsLang=en-us) 3. [Managing Lock Access](https://help.33lock.com/managing-devices?hsLang=en-us#managing-lock-access) # Passcode Types ### Overview Passcodes (PIN codes) offer a flexible, key-free method to access a building. This article explains the different types of passcodes available for our locks. Passcodes are often the most adaptable credential, suitable for a wide range of applications. They do not require any physical medium—such as a card or mobile device—making them simple to issue, share, and manage. This requires a [registered TTLock account](https://help.33lock.com/ttlock-account-registration?hsLang=en-us) - Download the TTLock application on [Android](https://play.google.com/store/apps/details?id=com.tongtongsuo.app&hl=en_CA) or [iOS](https://apps.apple.com/us/app/ttlock/id1033046018) devices - Access the TTLock Web System on desktop [here](https://lock2.ttlock.com/) #### Passcode Types **1. Online codes.** Includes: Custom - Requires either a [connection to a gateway](https://help.33lock.com/understanding-gateway-settings?hsLang=en-us) or a direct Bluetooth connection to the lock. - They can be added, modified, or deleted in real-time remotely, or directly at the lock. - They can be customized to any 4 to 9 digit code. ##### **Custom** - Choose whether this code should work permanently or set a specific start and end time - Set specific start and end times (accurate to the hour) **2. Offline codes.** Includes: **Timed, One-Time, Permanent, Recurring, Erase** - These are generated algorithmically and don't require a Bluetooth connection to the lock or a network gateway. - Although they can be generated without a connection, they do require a Bluetooth connection to the lock to be modified or deleted. - They must be used within 24 hours (except for one-time codes, which must be used within 6 hours) or they will be suspended for security reasons. - Offline codes are randomly generated and range from 6 to 9 digits in length. ##### **Timed** - Set specific start and end times (accurate to the hour) ##### **One-time** - The code is valid for a single use only and becomes inactive afterwards ##### **Permanent** - The code remains valid and can be used indefinitely until it's deleted ##### **Recurring** - Choose a recurring cycle for the code: daily, weekend, workday, or a specific day of the week - Set specific start and end times (accurate to the hour) - The code is only valid during the specified cycle ##### **Erase** - Generate this code to remove all codes from a lock - Once entered into the lock, all existing codes will be permanently erased Review this [article](https://help.33lock.com/creating-passcodes?hsLang=en-us) to learn how to add passcodes. - [Getting Started](https://help.33lock.com/getting-started?hsLang=en-us#main-content) - [Understanding the Basics](https://help.33lock.com/getting-started?hsLang=en-us#understanding-the-basics) - [Initial Setup](https://help.33lock.com/getting-started?hsLang=en-us#initial-setup) - [Before You Buy](https://help.33lock.com/before-you-buy?hsLang=en-us#main-content) - [Door Templates & Compatibility Guides](https://help.33lock.com/before-you-buy?hsLang=en-us#door-templates-compatibility-guides) - [IntelliMortise Cover Plates](https://help.33lock.com/before-you-buy?hsLang=en-us#intellimortise-cover-plates) - [Installation](https://help.33lock.com/installation?hsLang=en-us#main-content) - [Installation Manual](https://help.33lock.com/installation?hsLang=en-us#installation-manual) - [Post-Installation Checklist](https://help.33lock.com/installation?hsLang=en-us#post-installation-checklist) - [Managing Devices](https://help.33lock.com/managing-devices?hsLang=en-us#main-content) - [Connecting your Devices](https://help.33lock.com/managing-devices?hsLang=en-us#connecting-your-devices) - [Lock Features & Settings](https://help.33lock.com/managing-devices?hsLang=en-us#lock-features-settings) - [Managing Lock Access](https://help.33lock.com/managing-devices?hsLang=en-us#managing-lock-access) - [Lock Adminstration](https://help.33lock.com/managing-devices?hsLang=en-us#lock-adminstration) - [Integrations](https://help.33lock.com/integrations?hsLang=en-us) - [FAQs](https://help.33lock.com/faqs?hsLang=en-us#main-content) - [General Lock Questions](https://help.33lock.com/faqs?hsLang=en-us#general-lock-questions) - [Installation & Compatibility Questions](https://help.33lock.com/faqs?hsLang=en-us#installation-compatibility-questions) - [Gateway Questions](https://help.33lock.com/faqs?hsLang=en-us#gateway-questions) - [Troubleshooting Hub](https://help.33lock.com/troubleshooting-hub?hsLang=en-us#main-content) - [Hardware Troubleshooting](https://help.33lock.com/troubleshooting-hub?hsLang=en-us#hardware-troubleshooting) - [Warranty & Returns](https://help.33lock.com/warranty-returns?hsLang=en-us) - [PRODUCTS](https://www.33lock.com/products) - [PARTNERS](https://www.33lock.com/partners) - [ABOUT US](https://www.33lock.com/about) [![](https://help.33lock.com/hs-fs/hubfs/v%20(Dark%20BG%20variant)%20Logo%20(5)-1.png?width=160&height=80&name=v%20(Dark%20BG%20variant)%20Logo%20(5)-1.png)](http://www.33lock.com) [mailto:support@33lock.com](mailto:support@33lock.com) Copyright © 2026, 33lock.com