Why is there no sound from the margin keys and no sound from attendance? March 07, 2022 04:07 Updated A: This is because the Volume of the Attendance machine is turned off The sound needs to be turned back Related articles How to connect an Android phone to a monitor? What should I do if the administrator has changed or does not remember my password? Why does the time clock go to zero after a power failure and a restart after a period of time? Comments 0 comments Please sign in to leave a comment.