M15 video doorbell multi-function video intercom doorbell wireless night vision function music ringtone smart doorbell

4.3 inch wireless video intercom doorbell single wake-up, two-way half-duplex intercom external antenna design distance long anti-interference Press the doorbell button, screen real-time video view indoor machine one-click answer, voice intercom with visitors at the door Support infrared night vision, day and night visitors are clearly visible at the door Support one-click photo/video, the door situation is in control of the indoor machine 6 ringtones switching, the sound size can be adjusted Support shortcut operation Volume/brightness, say goodbye to cumbersome settings External industrial-grade antenna, open transmission distance 150M, indoor (wear 1 block) transmission distance 50M Support TF card function, maximum support 256G energy-saving design, the door machine can be used for about 6 months on a single charge Indoor unit: 4.3-Inch color display Take a photo/video/video intercom/ Visitor Message View ABS + PC flame retardant material gives you safer protection Silicone buttons for better feel/longer lifespan Type-C power interface Supports 14 languages Door machine: 300,000 professional security camera, resolution 640 * 480 80 ° viewing angle 4 850 infrared night vision lights, 1 meter infrared night vision Type-C interface Long standby for 6 months 2 installation methods: 3 adhesive mounting and screw mounting