I am trying to design a light for a studio project at school and I have some questions on the wiring and most importantly the motion sensor.

I am going to have two lighting groups, which will be a main flood light and then a group of LEDS. Mind you I really don't know what I'm doing so all the help I can get will be great. I want the system to work this way...

When I plug in the system I want the main flood light to be on, and then when the sensor is tripped I want the flood light to turn off and the LEDS to turn on. And these two lights would just switch back and forth every time the sensor is tripped.

I was wondering if this is possible and what kind of sensor I need and what wires I might need and how to hook them up?

I appreciate it