Hi all,
I found the images I took from altering the Kenwei KW-136M Pin-hole camera. As I told above the doorcamera has a small relay inside which was initially for door openers. I used this relay for the doorbell contact (pusher). So if someone pushes my doorbell the relay is activated, my normal doorbell is ringing, an X10 or Visonic signal is send to my domotica system, The camera is directly taking pictures or making video's, a signal is also sanded to two extra doorbells located in the kitchen and office and finally everything is logged in the database and set on my website
In the first picture you see the adjustment on the circuit, the green wires are the result. I disconnected the small Push switch button from the circuit and use this button for switching the relay which is also already present on the circuit board. I disconnected every contact from the button except the GND(-). So I use the switch button which is normally for opening a door as a doorbell switch.
One green wire goes from the buttom to the relay and the small green wire comes from the power (+ 12 volt) point of the circuit, this is just for feeding the relay with 12 volt.
I disconnected the relay from the circuit board by scratching a print circuit, so the relay has no connection with the circuit anymore.
Connect the two green wires to the relay, and check if the relay is switching once you push the button. So this relay now can be used as doorbell switch which you can connect to a Xanura or Visonic module.
The kenwei Doorcamera has standard a 4 way connector:
Red - Audio
Blue - GND
Yellow - Power 12volt
White - Video
You need to handle the extra wires from the relay for the doorbell.
If you want you can even connect the audio to your home automation system and record the outside sound when the doorbell is pushed
