When magnetic contacts are registered with control panel, if the panel don't collect the close signal from them, and it will cause failure when arm away (arm-stay) the system.This failure will be indicated with voice “ Window or door is open, Arm failed.” and SMS  message will send as long as it is selected

a) The interfering will cause the signal failure of wireless signal, then Arm failure. At that situation,    please separate and close the magnetic contacts again to make sure Arm successful. For security reasons, it is strongly suggested to make sure every arm successful. This can be audio confirmed by internal siren sound and SMS massage. To set the internal siren, refer to  page 23 “Call Back When Arm/Disarm
 

b) If users want to ignore the open area remind, please refer to page 32 to turn off this function