If you are trying to open a SentriLock lockbox but seeing Error DND, the lockbox is either trying to be opened between the hours of 10pm and 5am which is outside of the access window OR the internal lockbox clock is incorrect. 

If accessing the lockbox during the hours of 5am to 10pm, try to reset the internal clock with the below instructions:

  1. Navigate to the SentriLock Access page of your account.

  2. Click "Get Code" under the appropriate serial number.

  3. Select "Cardless Clock Code" as the Code Type

  4. Click "Get Code" to generate the Cardless Clock Code.

Note: the Cardless Clock Code is time sensitive, so you will need the lockbox in hand when generating this code in order to enter it into the lockbox at that time.

Still having trouble with your SentriLock lockbox? Please complete the SentriLock lockbox troubleshooting questionnaire. We'll ask some quick questions to better understand the problem and hopefully provide the steps to resolve the problem. If the issue cannot be solved by the suggestions in the form, you will be asked to provide more information and our team will help troubleshoot.

Please note that a SentriLock battery kit is required to troubleshoot mechanical malfunctions of SentriLock lockboxes. We are unable to provide a free battery kit, even if your SentriLock lockbox is under warranty. Please consider purchasing at least one battery kit to have on hand for your office. You are able to purchase a battery kit though the SentriLock order form under the Account > Add-ons page of your Tenant Turner account.

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