I have a 3 way light and want to replace one of the light switch with a 3 way light motion sensor swith. Ky sensor has a red black brown and green cable. By light switch has 2 black and 2 red cable. How do I hook this up? Thanks for your help

The wiring you indicate at the switch your looking at tells me it is actually a 4 way switch[2 screws on each side] and you should have 2 more switch locations to turn on the same light. One of those switches should be a 3 way switch with 1 screw on one side and 2 screws on the other side. The screws across from each other are for your runners to the next switch and the 3rd screw is your common screw[most switches usually say common beside the screw].Check the wiring diagram for your new motion switch and connect to appropriate wire from 3way switch.