For parts not working. The cable connected to the camera is damaged. The main screen should be ok. Probably damaged when installing. The metal plate used to mount the screen has been stuck to piece of foil and would need attention by reapplying some double sided tape. I'd advise that this item is only useful for the main screen unit.
eBay
3.97inch Video Peephole Doorbell Camera Video-eye Auto Record Electronic Ring Night View Digital Door Viewer Entry Home Security
Aliexpress UK
This Yale electronic door viewer and memory card is the perfect addition to your home security. With a sleek chrome finish and silver colour, it is both stylish and practical. The viewer is designed with a mini view and wide scope feature, making it easy to see who is at your doorstep. The device is digital and comes with a memory card, allowing you to store multiple videos and photos. It is compatible with all Yale key systems and is easy to install. The Yale EIS1100SD door viewer and memory card is a must-have for anyone who values security and convenience.
eBay
Tuya Smart Life 3MP Battery Powered 2.4Ghz WiFi Magic Peephole Eye Digital Door Viewer PIR Doorbell Camera 940NM Night Vision
Aliexpress UK
Brand new sealed Last one Yale smart living digital door viewer memory + DDV 4500 Fast free post
eBay
KAK 3.5" Digital Door Peephole Camera Electronic Door Viewer Bell 120 Degree Wide Angle HD Screen Home Security System Hardware
Aliexpress UK
Simple and convenient for the elderly and children. 24-hour monitoring. Its safe to use in all weather conditions, which makes it ideal for use all through the year. 【Easy Installation】Ultra-thin body, stylish and beautiful.
eBay
3MP Tuya Smart Life APP Home Battery WiFi Video Digital Door Peephole Viewer PIR IR Door Bell Magic Eye FHD Camera Alexa Google
Aliexpress UK
Fits standard 14mm hole and door thickness 38-110mm. 4" LCD Display Screen x 1. Inside the Box. DIY friendly - battery powered and easy to fit. Micro SD card NOT included. Integrated 80db doorbell.
eBay
Mini Peephole Smart Wireless Door Viewer Camera PIR Motion Detection Digital Peephole Eye Viewer 2.8 Inch Doorbell Door Camera
Aliexpress UK
eBay
Smart 3MP Mini Digital Peephole Door Camera 2.4Ghz WiFi Infrared IR Night Vision PIR Motion Detection Digital Viewer iCam365 APP
Aliexpress UK
Item Type: Digital Door Viewer. Feature: 1. See who is at your door without squinting or straining your eyes. Do not miss any details or potential threats. If you do not receive our reply within 48 hours, pls.
eBay
Tuya Smart 3MP 140° Wide View Angle Mini Digital Peephole Eye Viewer WiFi IR PIR Detection Doorbell Door Camera Alexa Google
Aliexpress UK
Peephole Size: φ5.8 1.3cm/φ2.28 0.51in. Peephole Weight: 27g/0.94oz. 1 Peephole. In -on mode, you can press " " to takes photo too. The screen supports display. When no rings the doorbell outside the door, the owner needs to press the button in the middle of the screen to check the situation at the door.
eBay
KAK Door Peephole Camera 3.5 Inch LCD HD Screen Digital Peephole Door Viewer Camera Video Doorbell 120 Degree Door Hardware
Aliexpress UK