![100_1536.JPG 100_1536.JPG](https://makerv2.webteractive.co/forums/data/attachments/11/11027-0ffe5b5de121bbd79b80a422b6dba071.jpg)
Recently my garage had to be rebuilt and the switch operated by a key that was fitted outside the garage has been removed. This enabled me to switch off the PIR alarm sensor in the garage as I approached in my car without going into the house and using the alarm panel to disarm the system. I could then park the car and switch back on the sensor as I left the garage before going into the house and switching the alarm off on the panel.
The builder lost the wiring diagram for the relay key switch and has also damaged it. So I thought that I would try to design a simple replacement but using a remote control relay and a project box fitted outside the garage with two LEDs (red & green) to show the status of the PIR sensor.
Please see attached photos of PIR and old key switch with relays.
I would like to know please do I connect the PIR sensor terminals in series with the relay (NO) terminal and common? Then wire in in parallel the red LED across the same relay terminals. Finally, I could connect the green LED across the relay (NC) relay (NC) terminal. I am powering the relay with an independent 12v supply via a mains adapter that I have bought. In fact I have all the components and I am trying to build up a model of my design on a breadboard. I have the relay and LEDs working fine but I am unsure of the connections to the PIR sensor.
Many thanks for your help.