This Wireless Doorbell & Camera combines a plain vanilla wireless door bell…natch…with a teeny video recorder. When a visitor presses the button to ring your doorbell, the camera starts working and records a video of them to a hidden removable SD memory card.
The camera offers 2 megapixel resolution and 30 fps video rate and will record down to 1 Lux illumination (i.e. gloomy). When you return home, just pop the card into a reader on your computer and check to see who tried to deliver stuff. And failed. $40.99.
In order to solve your problem, we will introduce you a new model Wireless Monitor Doorbell. With a build-in hidden camera inside, it can record anything when someone ring up the bell. This will help you to see who knocked your door when you were not at home. Remote wireless paging system, the most distance is 30 Metres. All video and audio files will be save in a memory card. You can see the video when plug the card into your PC.
That is a really good doorbell. I will go and find if it can work for me. I need "someone" watch my house when I am on holiday. Good.