Perform the following checks:
APEX and VP Series KeypadsCurrent series of standard access keypad devices with basic and general functionality. are equipped with a built-in optical tamper sensor. If the unit is removed from its housing or if the housing is opened, the system will report a tamper alarm. The tamper sensor is an optical lens. When the housing is placed over the keypad, there is a piece of metal that covers the lens sending it a reflection. Sometimes dirt, dust, or cob webs inside the keypad housing can cover the lens preventing it from receiving this reflection. You can try removing the keypad from it's enclosure and cleaning the lens of the optical sensor.
If the keypad says “Please Wait” or “We’re sorry this device is out of Service” when entering a code, and then returns to the date and time screen without allowing entry to the property, the keypad has lost communication with the controller. A CommunicationElectronic data flowing between devices. See also RS232, RS422, RS485, and USB. Off or Data Comm Off event will appear in the EventViewerOne of the two options for viewing the Event Log. This option allows you to see any number of events in historic order of occurrence and may be used in conjunction with the VideoViewer to see video of the event. or the QuickViewerA version of the EventViewer which allows the site to view only the most recent 100 events. This does not allow the interface to the VideoViewer. in StorLogix to indicate the device has lost communication with the controller.
Use the following troubleshooting steps to fix the problem: