I have bought a couple of LV002 sensors (LV002 DC 5.5-36V 8-15m Doppler Radar Microwave Sensor Switch Module | eBay).
i cannot find how to wire the up to my arduino mega, or any other board.
The out+ and out- on the board confuses me no end.
can anyone guide me how to wire this, and mabe an example how to read te data?
and yes, its the last time i will buy something i do not understand 
thanks for reading
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You will have to experiment. I would apply 5V to VDD and GND, then use my multimeter to see what voltages appear on OUT+ and OUT- when movement is detected.
The input labeled "GDS" may have to do with using a light sensor to disable the motion detector during the day (e.g. using a CDS cell).