In this video, the NOTO JKCT-69420 plays the Rinxlen Medley version "Hill of the Tangerine Blossoms" chime, and the Chordifyer does a 30+ second alert/steady tone.
NOTE:
Sirens are always tested on the first Tuesday of the month at 10:00 A.M.
P.S: While inserting the Chime card, I said COC-2 instead of COC-1, my bad. I get mixed up with the order of the Chime cards.