General
Installation technique	Bus system
Mounting method	Surface mounted (plaster)
Material	Plastic
Picture system	PAL
Colour	Other
Property picture system	Colour
Screen diagonal	55.9 mm
With video
With memory function
Overhear protected
Operation door lock
Control extra function(s)
Hands free
Function lamps
Can be connected to smartphone
Hearing aid compatible
Mutable call tone
Internal communication
Specific call tone
Add-on device
Loudness control
With touch screen
IFTTT support available
Zoom, pan/tilt function

Home station video AP Plus color aluminum System 55 - Card slot for SD memory card. - SD memory card. New additional functions in the end customer menu: - Internal image storage (after installer approval) for up to 48 images. Manual transfer of internal to external image storage (SD memory card). Manually delete image storage. Trigger manual snapshot. Rename switching operations and internal calls. Change date/time. New additional functions in the installer menu: - Release of the internal image storage. Set the image interval and recording speed. Set date/time. Properties of the SD memory card: - Directory for ten ring tones, five of which are freely configurable in WAVE format. Folder for external image storage (max. 200 images). Installation without cover frame or with 2-way cover frame without center bar from the System 55 and surface switch ranges. The SD memory card is included in the scope of delivery.