First Alert 2.5Color LCD Portable Wireless Family Monitor DWB-740 - Manual (Page 17)

Operating Menus
Model DWB-740 User's Manual
17
SD Card Format
Access the SD Card Format menu from the Main Menu. Use this menu to format SD card.
For first time use, it is strongly recommended to format the SD card.
Reformatting an SD Card will erase viewing the recording.
SD C ARD F ORMAT
Press to select YES or NO