That remote isn't for a hi-hat but for the Cajon, Asaph. It has a beater inside of it. If you look closely at the picture of the Cajon, you will see a cable going across the top of the bass drum and into the back of the Cajon.
Good question... I didn't ask, Billy but I will. Interesting enough, I didn't look inside the cajon to see how it actually works. I did watch him play it however, alternating between the bass drum and the cajon. Very cool. On a good system with killer subs, it sounds awesome.
More Spectrum 40 Pics Order of pics:S40 at the Kuumbwa Jazz Center in Santa Cruz - Billy and Monitor/equipment tech, Ross relax before the show at Yoshi's - Drum/sound tech, Franz doing likewise - Gutarist, Dean Brown chowin down - Two shots of Dean after changing strings - Keyboardist, Gary Husband having a little pre-show snack - Spectrum 40 in their element - Billy speaks.