If the SD card inserted in the Wireless Home Monitor no longer overwrites, file overwrite may have been disabled. The file overwrite icon () will display on the Live View of the monitor if enabled. If file overwrite is not enabled the SD icon will turn red () when the SD card is full, and files will need to be manually deleted before new recordings can be stored.
To enable File Overwrite:
If the SD card does not stay in the SD card slot:
If there is an SD card error there may be a corrupt file on the SD card. Format the SD card using the monitor.