The programmable speaker doesn't have that field, which is annoying because I can never remember exactly what signal the accumulator puts out for charge percent when I'm hooking one up...Hovering over the circuit network id in the entity circuit control window will now show a tooltip with the circuit network contents.
![Wink ;)](./images/smilies/icon_e_wink.gif)
Seems like an oversight in the original work, but hopefully one that is easy and fast to fix. Thanks!