So I have this sensor. I wanted the sensor to be further from the control module than the existing wires allowed for, so I added an extension. There were 3 insulated wires and a 4th one wrapped around the three wires.
I suppose the non-insulated wire insulates the 3 wires from magnetic fields?
So the extension has the insulating wire connected (from the PIR to the module), but doesnt wrap around the 3 wires the length of the extension.
I didnt really think it through and just connected it all up. Come testing time, the lights switched on and then off 30 seconds later as I expected. Though then it started randomly switching the light on and off. Hanging around for a bit, I noticed it kept happening. So then I began to think about the insulating wire and where I had run the wire. It happens to run right next to the houses main electrical wires to the fuse box where I mounted the module.
I happen to have a spare PIR sensor and module and decided to try and isolate the problem. The same thing happened with the other module and an unedited PIR sensor. So now I am completely lost! Kind of throws the whole "interference" idea out, doesnt it?
I suppose the non-insulated wire insulates the 3 wires from magnetic fields?
So the extension has the insulating wire connected (from the PIR to the module), but doesnt wrap around the 3 wires the length of the extension.
I didnt really think it through and just connected it all up. Come testing time, the lights switched on and then off 30 seconds later as I expected. Though then it started randomly switching the light on and off. Hanging around for a bit, I noticed it kept happening. So then I began to think about the insulating wire and where I had run the wire. It happens to run right next to the houses main electrical wires to the fuse box where I mounted the module.
I happen to have a spare PIR sensor and module and decided to try and isolate the problem. The same thing happened with the other module and an unedited PIR sensor. So now I am completely lost! Kind of throws the whole "interference" idea out, doesnt it?
Last edited: