Ajax DoorBell, video doorbell with integrated AI, PIR sensor, and app control, HDR technology, two-way audio communication, AI-based object detection, emergency power battery, tamper contact, PIR sensor for motion detection, up to 1700m wireless range, easy installation and setup, speaker volume 85dB, motion detection up to 4m, DC voltage range 12-24V, AC voltage range 16-24V, 50/60Hz, battery: Li-Ion 600 Ah, WLAN: 2.4 GHz, up to 2 Mbit/s, 4 MP CMOS sensor, resolution 2688x1520px, viewing angle: horizontal 155°, vertical 90°, protection class: IP54, incl., SmartBracket mounting plate, wedge mount 2x, BellKit, installation kit, quick start guide