thanks for the quick help!!!

i tried it with range 255 und gain 16 and i´m receiving only 40,41 on the serial port (replacing the print to lcd commands to "print range") because i dont have the application board. within 1meter distance i´m getting exact results!

i´m only using ccontrol m unit2.0. for reading data , i´m using hyperterminal with 9600baud, 8databits, no parity, 1stopbit