INSTALLING Schlage CO Series Offline Locks

Schlage CO Series locks are available in three models, the CO-100, CO-200 and CO-250 locks.


Schlage has introduced the CO Series, a platform of electronic locks that operate as standalone access control systems. These offline locks are ANSI/BHMA 156.25 Grade 1 and UL 294 listed for access control. They are available as cylindrical locks, mortise locks and exit device trim. Mechanical key override is standard and compatible with a variety of brands and types of cylinders. For the CO-Series mechanical key operation is required to reset the lock to the factory default.

Schlage CO Series locks are available in three models, the CO-100, CO-200 and CO-250 locks. The CO-100 is manually programmed using only the keypad and can store up to 500 3-6 digit PIN codes stored in the lock.

The CO-200 offers additional credential options that include keypad, proximity cards, magnetic stripe cards and dual credential capability including proximity card and keypad or magnetic stripe card and keypad. These locks can be manually programmed at the door. However, computer programming is necessary in order to take advantage of the full range of features.

The open architecture CO-200 platform can be operated using Schlage or third party access control management software. Depending upon the application, Schlage offers four levels of management software: SMS Express, Select, Premier, or Enterprise software. Using a Windows™ based personal computer, the access control management software program expands the capabilities of the CO-200 Series locks to include automatic unlocking and locking, holidays, time zones and audit trail including audit trail of mechanical override key operations.

Once a CO-200 lock is programmed via a computer, then manual programming is no longer possible and any existing keypad programming is erased. A computer programmed CO-200 lock can have up to 2,000 users and 2,000 audit trails.

The CO-250 offers two reader options magnetic stripe and magnetic stripe plus keypad reader. These computer programmable offline locks store user rights on the card. A computer programmed CO-250 lock can have an unlimited number of users and up to 4,000 audit trails. The CO-250 Series locks are programmed using the SMS Select, Premier, or Enterprise software, as well as third party access control management software.

Transferring data to and from the Schlage CO-200 and CO-250 locks from the management software running on a personal computer requires the Schlage Handheld Device (HHD) operating Schlage Utility Software (SUS). This same handheld device can capture diagnostic information about the lock such as battery and firmware level, as well as change configurations in the lock such as the magnetic reader track and audible feedback.

CO-200 and CO-250 locks are equipped with a USB port at the base of the outside lock assembly. The USB port serves to transfer the data from the HHD to the lock or retrieve audits from the lock to the HHD.

Schlage CO Series offline locks are specifically designed to take the place of legacy Schlage electromechanical locks. The CO-100 lock is designed to replace the Cobra and the Pro Series locks. The CO-200 Series locks are designed to replace the King Cobra 2 and the CM Series locks. The CO-250 lock is designed to replace the CL locks.

For those who have experience programming these legacy Schlage electronic locks at the keypad, the commands are basically the same for the keypad-equipped CO Series locks.

Schlage CO Series locks’ handing options are LH/RHR or RH/LHR, and are field configurable. The hand of the lock can be identified by the position of the lever catch. This spring loaded button that secures the lever to the lockset is always located on the same side as the latch bolt. To reverse the handing, the outside spring cage assembly must be rotated 180 degrees.

The cover must be removed from the baseplate in order to gain access and reverse the lock’s handing. For configurations with proximity or magnetic stripe readers, the credential reader is a separate integrated component that is removed along with the cover. On keypad only models, like the one reviewed for this article, the keypad credential is integrated with the base-plate.

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