Today I'm going to talk about a device that has time on the market but is little known, is the digital viewfinder or door, is an electronic device that is installed on the front door of the house or apartment and allows you to see on a screen to the people who knock at the door, this helps to have greater visibility of the visitor since it has in most cases a viewing angle of 120 °.
The most advanced devices of this type allow you to take photos and video of the visitor without his knowledge, has night viewer, micro SD card to record image or video, digital zoom, wireless connection with smart phone, besides all these attributes is easy installation and its measurement is standard adapts to most doors.
The 1 photo belongs to the Internet page: https://articulo.mercadolibre.com.mx/MLM-552908156-mirilla-digital-o-electronica-para-puerta-_JM
The 2 photo belongs to the website: https://es.aliexpress.com/item/2-4-LCD-Door-Peephole-Peep-Hole-Visual-Monitor-Wireless-Viewer-Camera-Video-Doors- camera / 2012269648.html
