The siren can also be used if you get busted by someone coming to your calling... Hit the siren and they will know for sure that the howling and coyote vocalization is not the real thing... I one time had a guy come into my FX5 coyote scenario in the daytime.. Thank God that I was using the electronics with the remote and I was not standing by the speaker.. Had I been using the mouth calls he might have shot me.. By the way on his back he was tothing a lever action rifle... He told me he heard the coyotes and he came in for them.. guy was just a neighbor and did not even have permission to hunt...
Since then I have put on the Star Spangled Banner, Anderson Bugle Taps, Anderson Bugle Charge, and Anderson Bugle Reveille to use if someone bust me when I'm using the FX5... however the siren will work.. figure the person already busted you. Make him jump out of his shoes a bit and hit him with the siren for about 30 seconds...