It's a bit weird, it needs a bit of special setup, but hey, you get status lights on an aux switch for your HX Stomp and HX Effects Device! This device connects via a TS cable to your devices. If you need for this switch to work with <another switch or expression pedal>. you may need a TRS->TS/TS cable to split your aux jack.

A 2 button normally-closed profile-matching sideaux for the Boss 500series pedals!