DoorBell Wireless Video Intercom with AI, PIR sensor and app control (black) AJAX SYSTEMS 66391.125.BL1 Manufacturer code: 66391.125.BL1. EAN: 4823114066146. DoorBell Smart Video Intercom Advanced Security and Comfort of Use DoorBell is a smart wireless video intercom that combines the functions of a high-quality 4 MP HDR camera, PIR sensor with AI and two-way audio communication. Thanks to the connection with the Ajax control panel and mobile app, the user has remote access to live image and notifications from anywhere in the world. Key features: Camera: 4 MP HDR with 155° viewing angle; Night mode: IR up to 6 m visibility in the dark; Motion sensor: PIR + AI recognizes people, vehicles, animals; Two-way audio: microphone and speaker with noise reduction; Housing: IP54 resistance to rain and dust; Power supply: AC/DC + backup battery; Connectivity: up to 1700 m wireless (with Ajax control panel); Integration: ONVIF, RTSP, Ajax system; Application: Ajax remote access, configuration, and notifications; Encryption: TLS, mTLS data transmission security; Application: Single-family homes and apartments; Offices, commercial premises, companies; Wireless monitoring systems; Locations with difficult access to wiring; FAQ Frequently asked questions How does motion detection work? DoorBell uses a PIR sensor and AI to identify people, vehicles, and animals, which helps reduce false alarms. Is wiring required? No, communication is completely wireless. Only an AC/DC power connection is required. How long does the backup battery last? It keeps the device running for several hours during a power outage. Can I receive images on my smartphone? Yes, using the Ajax app, you receive notifications, can receive calls, and view recordings from anywhere. How do I install DoorBell? Mount at eye level, preferably in a sheltered location. IP54 rating: rain and dust resistant. Does it work with other Ajax devices? Yes, full compatibility with the Ajax system, sensors, and alarms.