Thank you, much appreciated, I will let you when it has arrived.
Ah ok so that should be ok, could of this been a factor however that may of caused it to burn out at power up?
Not sure how I would do that as it doesnt have a ground on the 5V side. Unless there is a way to overcome this, or create one somehow. Hopefully the photos below will give an indication of a possible potential issue.
The sensor I am using it one not normally used with a RPi or IO Pi plus, however the project will involve these type sensors so would like to hoepfully get them working, if possible. The sensor is a pedestrain on crossing radar sensor normally used at pedestrian crossings. It's make and model is AGD220 however you may not find any documentation, so may need to refer to its newer version the AGD226 for details, if you need it.
One is a 24V DC (bottom of photo) switch mode power supply to power the sensor/radar itself. The other is a 5V DC (top of photo) switch mode power supply, to power relay boards, soon the RPi itself as well, however isn't currently, and also for the 5V loop through the sensor/sensor relay common and into the IO Pi Plus.
Close up of the cable colours for the sensor/radar. Red: 24V DC +, Black: 24V DC ground, Green: Earth, White: Relay Common - 5V input, Blue: Relay radar motion detect out - 5V to IO Pi Plus, Yellow: Relay radar no motion detect out - not connected yet.
This is how it is all laid out now, with the broken IO Pi Plus on the paper. The IO Pi connected directly to the RPi on the GPIO pins is for outputs to control lights.
Let me know if you need any more information, and thanks again so far for your help.