Hello k1w1_123 and Boki,

I found the correct command that is close to your suggestions, I already tested and it is working perfect, see the my sys.txt commands below:

; S P E E D C A M - C A T : 0
[speedcam_category:0]
activated_tonal_type="alert"
activated_spoken_type=sound
activated_sound="Fixed_Camera"
approach_beep_spoken_type=sound
approach_beep_sound="Fixed_Camera"
approach_beep_distances=400
overspeed_spoken_type=sound
overspeed_sound="Reduza Velocidade"
overspeed_min_tone_repeat_delay=8 ;delay in seconds
warn_distances="150:800,140:800,130:800,120:800,110:800,100:800,90:800,80:800,70:800,60:800,50:800,40:800,30:800,20:800,10:800"
use_road_speedlimit=0

I really want thank you for all support.

Mauricioea