When the battery level is LOW the AD & CO series locks will flash the Schlage key nine times before unlocking.
When the battery level is Critical the AD & CO locks will default to the selected "Battery Fail Mode" 1) As-is; 2) Secure/Lock; 3) Unsecured/Unlock... which are options in the SUS Edit TAB.
CO-Series (4 AA Battery ONLY)
AA Batteries = Full 6.2 V, low battery is 4.2V, critical is 3.8V
Coin cell = full is 3.0V, low is 2.7V
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