co and nd handles same

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Answer
As of June 2019, all ND, NDe, AD CYL and CO CYL levers are the same.
Between January 30, 2017  June of 2019, the AD and CO cylindrical lock levers were incompatible because of the ND / NDe lever and spring cage design change in January of 2017.Prior to January ...
The U-Factor, R-Value and K-Thermal Rating are measurements of thermal transmission through building products. U-Factor: Overall co-efficient of heat transmission passage through a built-up panel...
When new product(s) are added to an existing installed customer site, all devices at that site should be updated to the latest firmware revision that is available for the most consistent user exper...
Whenever an AD Series credential reader is upgraded with new or different credential types or replaced in the field, be sure to update. Lock firmware and reader firmware are packaged together so ...
Search the product library for firmware associated with your installed product to obtain the latest updates.  
Go to the Schlage support site to download the latest firmware package  - www.schlage.com/support  
Steps to determine what firmware version your products are currently using AND if a firmware update is suggested:1) Use the Hand Held Device (HHD) and Schlage Utility Software (SUS) application to ...
No, CO-Series products cannot be changed in the field from one credential type to another.
CO-Series locks can have their electronics (reader) replaced, however ONLY readers that are exact "like for like" replacements are allowed
A CO200 reader will not work on a CO250 lockset and a CO250 reader will not work on a CO200 lockset.
 See the attached Technical Note for instructions on saving a "Device Template" FROM a device or loading TO a device, Device Template Tech NoteOn the SUS/HHD go to the LOCK Properties tab, and sele...
On power-up the CO-Series locksets will provide 5 quick RED Schlage Button flashes and 5 quick beeps to indicate that the electronics (credential reader) has been changed.  In order to recover...
When/If the electronics (Credential Reader) changed on a CO-Series lockset, the lock will respond with 3 RED Schlage button flashes and 3 beeps for any key press or credential presentation.&nb...
CO Reader Modules cannot be replaced by Reader Modules with a different credential type; for example, a magnetic swipe credential reader cannot be replaced with a proximity credential rea...
A Credential Reader MAY be replaced with another Credential Reader of the same type; however, a Factory Default Reset must be performed before the lock will function properly.