For TwinBus video door intercom systems with color image reproduction. Brilliant color TFT display with 89 mm display diagonal, 320x240 (RGB) pixels and LED backlight. 20 ring tones selectable. Ring volume adjustable in 8 levels. Call mute switch with optical feedback. Optical call display. Night design. Light switch function. Door opener button. Camera control in conjunction with porter camera module 18787 or camera switch 14915. Call memory function. Ring tone differentiation for door calls, floor calls and internal calls. Integrated call connection relay (potential-free switching output). 2 special buttons freely assignable with optical feedback. Internal calls can be made via menu. Automatic door opener for door calls and floor calls. Control of display brightness, color and contrast. Display protected against scratches by protective film. The system is protected against listening and viewing as standard. Menu-supported operator guidance and commissioning via on-screen display (OSD) in 13 languages. Dimensions: 151x221x48 mm (WxHxD). Temperature range: 0 degrees to 40 degrees C. Accessories: ==>UP radio transmitter 17856.. for controlling the radio signal device
