DLINK DCH-Z510 Siren Connection -- help needed

I have successfully paired the device, when I change the device’s device handler to the Zipato Multisound Siren, it does sound the siren, (only 1 emergency sound). but when I change it back to the Dlink DCH-Z510’s device handler (DLINK DCH-Z510 Siren) nothing happens.

the log shows this:

debug Sending Insecure Command BasicGet()

debug Sending Insecure Command NotificationReport(event: 3, eventParameter: , eventParametersLength: 0, notificationStatus: 0, notificationType: 10, reserved61: 0, sequence: false, v1AlarmLevel: 0, v1AlarmType: 0, zensorNetSourceNodeId: 0)

debug Sounding Siren With Emergency

any idea how this can be solved?