I've made this simple DamageBeep which you can develop to make things like Damage Informer (useless, there's already one) or other things. It's open source, but the standard buttons are (Right)Shift + 1.
{$CLEO .cs}
0000: NOP
0662: "PopandauL"
thread 'DmgBeep'
if
8AF7: get_samp_base_to 33@...