Schlage CO100 User Guide: Comprehensive Overview (Updated 11/29/2025)
This guide details the Schlage CO100, a Grade 1, manually programmable offline electronic lock. It offers secure access control without networked system costs, ideal for various applications.
The Schlage CO100 represents a significant advancement in access control, offering a robust and reliable solution for environments where the complexities and costs of networked systems are undesirable. As an offline electronic lock, the CO100 operates independently, storing user credentials directly on the device itself. This eliminates the need for wiring or external power sources, simplifying installation and reducing long-term maintenance requirements.
Designed for both security and convenience, the CO100 is manually programmable, allowing administrators to easily add or delete users and manage access permissions without specialized software or tools. This feature is particularly beneficial for businesses and organizations seeking a straightforward and cost-effective access control solution. The lock’s Grade 1 security rating ensures a high level of protection against unauthorized entry, making it suitable for a wide range of applications, from commercial offices to educational institutions.
This guide provides a comprehensive overview of the CO100, covering everything from its key features and components to programming procedures and troubleshooting tips. Whether you are a security professional or a first-time user, this resource will equip you with the knowledge necessary to effectively install, operate, and maintain your Schlage CO100 lock.
What is the Schlage CO Series?
The Schlage CO Series is engineered as an ideal access control solution for those prioritizing enhanced security and user convenience, without incurring the expenses or complexities associated with fully networked systems. This series bridges the gap between traditional mechanical locks and sophisticated, integrated access control platforms.
The CO Series distinguishes itself through its offline functionality, meaning each lock operates autonomously, storing user credentials locally. This design simplifies installation, reduces wiring costs, and minimizes reliance on network infrastructure. The series offers a range of models, including the CO-100, catering to diverse application needs, such as classroom/storeroom functions.
A key benefit of the CO Series is its manual programmability, enabling administrators to easily manage user access directly on the lock. This eliminates the need for software or external controllers, streamlining administration. The series is built to meet rigorous security standards, providing reliable protection and peace of mind. Ultimately, the Schlage CO Series delivers a powerful yet accessible access control solution.
Key Features of the CO-100 Lock
The Schlage CO-100 lock boasts several key features designed for robust and convenient access control. Primarily, it’s a standalone, offline electronic lock, meaning it functions independently without network connectivity. This simplifies installation and reduces system complexity.
A central feature is its manual programmability; user rights are stored directly on the lock, allowing for easy addition and deletion of PIN codes. This minimizes reliance on mechanical keys and enhances security. The CO-100 is a Grade 1 lock, signifying its high-security rating and resistance to forced entry.
The lock supports configurable PIN length, offering flexibility in security protocols. It also includes diagnostic capabilities, allowing users to check the firmware version to ensure optimal performance. The CO-100 is compatible with firmware version 2.6.2 or higher. Its cylindrical chassis and available lever designs provide aesthetic versatility, making it suitable for various environments.

Understanding the CO100 Lock Components

The Schlage CO100 comprises a cylindrical chassis, Rhodes lever, and satin chrome finish. These components combine to deliver a durable and aesthetically pleasing access control solution.
Cylindrical Chassis Explained
The Schlage CO100 utilizes a robust cylindrical chassis, forming the foundational structure of the lock. This design provides significant strength and resistance to forced entry, contributing to its Grade 1 security rating. The chassis houses the internal mechanisms, including the keypad, electronic components, and locking bolt.
Unlike mortise locks, the cylindrical chassis is designed for easier retrofit installations into doors prepped for standard cylindrical locksets. This simplifies the upgrade process from mechanical to electronic access control. The chassis is constructed from high-quality materials, ensuring long-term durability and reliability.
Its construction focuses on resisting both physical attacks and environmental factors. The internal components are securely mounted within the chassis, protecting them from damage. The cylindrical shape also contributes to the lock’s overall tamper-resistance. This foundational element is critical to the CO100’s overall security performance and longevity.
Rhodes Lever Design and Function
The Schlage CO100 often features the Rhodes lever design, offering a stylish and ergonomic method for retracting the bolt. This lever isn’t simply aesthetic; it’s a crucial component of the lock’s functionality, providing a manual override in case of power failure or system issues. The lever’s design prioritizes comfortable operation and durability.
The Rhodes lever is constructed from high-quality materials, matching the satin chrome finish for a cohesive look. Its robust build ensures it can withstand frequent use without showing signs of wear. The lever’s internal mechanism is directly linked to the locking bolt, allowing for smooth and reliable operation.
Beyond manual operation, the lever also plays a role in the lock’s internal diagnostics. It’s a key element in ensuring the CO100 provides both electronic security and a dependable manual backup, enhancing overall user experience and peace of mind.
Satin Chrome Finish Details
The Schlage CO100 lock, frequently available with a satin chrome finish (designated as 626), offers a sophisticated and durable aesthetic. This finish isn’t merely cosmetic; it’s designed to resist corrosion and maintain its appearance even with frequent handling. The satin chrome provides a subtle sheen, avoiding the glare of polished chrome while still presenting a clean, modern look.
The application process for the satin chrome finish involves multiple layers, ensuring long-lasting protection against scratches and wear. This finish is particularly well-suited for commercial environments where locks are subject to heavy use. It complements the Rhodes lever and cylindrical chassis, creating a unified and professional appearance.
Maintaining the satin chrome finish is relatively simple, requiring only occasional cleaning with a mild detergent and soft cloth. This finish contributes to the CO100’s overall quality and longevity, making it a reliable and visually appealing security solution.

Programming the CO100 Lock
The Schlage CO100 is manually programmable, allowing user rights to be stored directly on the lock. Unique PIN codes can be easily assigned and managed.
Manual Programming Process
The Schlage CO100 lock’s programming is performed directly on the device, eliminating the need for software or a network connection. To begin, ensure the lock is powered on and access the programming mode using the designated procedure outlined in the full user guide. This typically involves a specific sequence of button presses on the keypad.
Once in programming mode, you can add, delete, or modify user PIN codes. The system allows for flexible PIN length configuration, enabling administrators to customize security levels. If a PIN is entered incorrectly, simply press a designated key to restart the entry process. The lock provides visual feedback through LED indicators, confirming successful programming steps.
Remember that CO-100 locks require firmware version 2.6.2 or higher for optimal functionality. Regularly checking and updating the firmware, as detailed in the Lock Status Reports section, is crucial for maintaining security and accessing the latest features. This manual process ensures straightforward and secure access control management.

Changing PIN Length Configuration
The Schlage CO100 allows administrators to customize the length of user PIN codes, enhancing security based on specific needs. This configuration is achieved through the manual programming process, accessible directly on the lock’s keypad. By default, a standard PIN length is set, but this can be adjusted to increase or decrease complexity.
To modify the PIN length, navigate to the appropriate programming menu using the designated button sequence. The lock’s interface will then present options for selecting the desired PIN length, typically ranging from four to six digits. Confirm your selection, and the new PIN length will be applied to all subsequently created user codes.
Adjusting PIN length impacts user convenience and security. Shorter PINs are easier to remember but less secure, while longer PINs offer greater protection but require more effort. The CO-100’s flexibility allows tailoring the system to balance these factors effectively. Remember to consult the full user guide for detailed instructions.
Adding and Deleting User PIN Codes
The Schlage CO100’s core functionality revolves around managing user access through unique PIN codes. Adding new users is a straightforward process performed via the lock’s keypad interface, requiring administrator access. Each user receives a distinct PIN, minimizing the need for traditional keys and bolstering security.
To add a user, enter the programming mode and select the “Add User” function. The system will prompt for a new PIN code, which you enter and confirm. This code is then associated with a specific user profile within the lock’s memory. Deleting a user is equally simple, involving selecting the “Delete User” option and entering the existing PIN code to be removed.
Regularly reviewing and updating user PINs is crucial for maintaining a secure environment. The CO-100 allows for efficient management of access rights, ensuring only authorized personnel gain entry. Refer to the comprehensive user guide for detailed step-by-step instructions.

Lock Operation and Functionality
The Schlage CO100 operates using individually assigned PIN codes for access. It supports both Classroom and Storeroom functions, offering flexible control over entry points.
Using PIN Codes for Access
The Schlage CO100’s primary access method revolves around unique PIN codes assigned to authorized users. Each user receives a distinct code, minimizing reliance on traditional mechanical keys and bolstering security. To unlock the door, simply enter the correct PIN code via the integrated keypad.
If an incorrect PIN is entered, the lock provides feedback – the LEDs will blink red with each button press. Users can immediately re-enter their code by pressing the checkmark key. The system allows for configurable PIN lengths, offering flexibility to suit security preferences.
User rights are stored directly on the lock itself, making it a truly standalone system. This eliminates the need for external controllers or networking infrastructure. Managing user access is straightforward, allowing administrators to easily add or delete PIN codes as needed, ensuring only authorized personnel gain entry. This feature enhances overall security and control.
Classroom/Storeroom Function Explained
The Schlage CO100 lock offers both Classroom and Storeroom functions, catering to different access control needs. The Classroom function allows outside access with a valid PIN code, while also permitting interior access without a code, ideal for educational settings or shared spaces. This facilitates easy entry and exit for authorized individuals during regular hours.
Conversely, the Storeroom function requires a PIN code for entry from both the outside and inside. This provides a higher level of security, suitable for areas containing valuable assets or sensitive information. It restricts access to only those with the correct credentials, regardless of their location.
Selecting the appropriate function during initial programming determines the lock’s operational behavior. This flexibility ensures the CO100 can be tailored to specific security requirements and usage scenarios, offering a versatile access control solution.

Checking Lock Firmware Version
Ensuring your Schlage CO100 lock has the latest firmware is crucial for optimal performance and security. The CO-100 requires firmware version 2.6.2 or higher to function correctly with all features. To check the current firmware, access the Lock Status Reports section through the lock’s programming interface. This process involves navigating the lock’s menu using the keypad and observing the LED indicators.
The lock will display the firmware version during the status report sequence. Compare this version number to the latest available on the Schlage website or in the official user guide. If an update is needed, follow the instructions provided by Schlage to download and install the new firmware.
Regularly checking and updating the firmware safeguards against potential vulnerabilities and ensures compatibility with new features and enhancements.

Troubleshooting Common Issues
Common problems include incorrect PIN entries, indicated by blinking red LEDs. Lock status reports and diagnostics help identify issues, ensuring smooth operation of your Schlage CO100.
Incorrect PIN Entry Procedures
When attempting access with the Schlage CO100, incorrect PIN entries are a frequent occurrence. If a user enters an invalid PIN code, the lock doesn’t grant access, and the system provides visual feedback. Specifically, the left and right Schlage button LEDs will blink red once with each incorrect button press, signaling an error.
To retry, simply press any key on the keypad to initiate a new PIN entry attempt. The system allows multiple attempts, but repeated failures may trigger a temporary lockout to enhance security. If the PIN credential is entered incorrectly, pressing the ‘clear’ key restarts the process.
Users should be mindful of the configured PIN length. If the PIN length is manually configured, ensure the entered code matches the set length. If forgotten, consult the administrator or refer to the programming section of this guide for assistance in resetting or retrieving PIN codes. Consistent and accurate entry is key to successful operation.
LED Indicator Light Meanings
The Schlage CO100 utilizes LED indicator lights on the lock’s buttons to communicate its status. Understanding these signals is crucial for effective operation and troubleshooting. A solid green light typically indicates a successful operation, such as a correct PIN entry and unlocked door. Conversely, a blinking red light signifies an error, most commonly an incorrect PIN attempt, as previously detailed.
During programming, the LEDs provide feedback on the process. Specific blink patterns indicate different stages, like entering a master code or assigning a user PIN. Refer to the programming section for detailed interpretations. A rapid blinking pattern may indicate a low battery condition, prompting a battery replacement.
The left and right Schlage button LEDs blink red once with each button press during PIN entry. These visual cues help confirm input and identify potential issues. Always consult the full user guide for a comprehensive list of LED behaviors.
Lock Status Reports and Diagnostics
The Schlage CO100 offers diagnostic capabilities to assess lock functionality and identify potential problems. Accessing the Lock Status Reports section allows users to check critical information, including the lock’s firmware version. Ensuring the firmware is version 2.6.2 or higher is essential for optimal performance and security, as older versions may have limitations.
These reports can reveal details about recent access attempts, successful or unsuccessful PIN entries, and any error codes generated by the lock. Analyzing this data helps pinpoint the source of issues, such as a faulty PIN or a communication error. Diagnostic features aid in proactive maintenance and prevent unexpected lockouts.
Refer to the complete CO-100 User Guide for detailed instructions on accessing and interpreting these reports. Regularly reviewing lock status contributes to a secure and reliable access control system.

Maintenance and Parts Information
This Schlage manual provides a complete listing of available parts and assemblies for CO-Series locks. Maintaining your CO-100 ensures long-term reliability and security.
Available Parts and Assemblies
Schlage provides a comprehensive range of replacement parts and assemblies for the CO100 lock, ensuring longevity and ease of maintenance. These components cover various aspects of the lock’s functionality, from the cylindrical chassis to the internal mechanisms. Key assemblies include the complete lock body, keypad modules, and lever handles – specifically the Rhodes Lever design.
Individual parts, such as batteries, tailpieces, and mounting plates, are also readily available. Detailed parts diagrams and lists are included within the official CO-Series lock manual, facilitating accurate identification and ordering. Schlage emphasizes using genuine parts to maintain the Grade 1 security standard and ensure optimal performance.

Furthermore, replacement finish options, like the Satin Chrome, can be sourced to match existing hardware or update the lock’s aesthetic. Accessing these parts ensures that repairs can be conducted efficiently, minimizing downtime and maintaining the security integrity of the CO100 system.
Grade 1 Security Standard
The Schlage CO100 lock proudly meets the ANSI/BHMA A156.25 Grade 1 security standard, representing the highest level of performance and durability for electronic access control. This certification signifies rigorous testing against forced entry, including pick resistance, bump resistance, and drill resistance. Achieving Grade 1 status assures users of robust protection against unauthorized access.
This standard validates the lock’s ability to withstand sustained physical attacks, making it suitable for high-security environments. The CO-100’s cylindrical chassis and internal components are engineered to meet these demanding requirements.
Furthermore, the lock’s robust construction and secure programming protocols contribute to its overall security profile. Choosing a Grade 1 lock like the Schlage CO100 provides peace of mind, knowing that your property is protected by a product that has undergone extensive and independent verification.