hi ,here
first put in all batteries.then press the SET button.the Little led is going on.
now you can press E1 or E2 on the Transmitter the move the servo up and down.this is the staring Point.
when you press SET again the servo moves the ending Position.you can set it with e1 and e2 again...
i think if you pointing in someone eyes that is not so funny for him
but i think i no Problem to use a laserpointer in the rangefinder.i will test it in the next month