Emagic — Logic Control — manual
I found a copy of the eMagic Logic Control manual.

Handy little chart of all the switches and LEDs on the device. I have modified it a bit…

On my Mac I can use the ‘send midi’ command to flash the CONTROL light like this

sendmidi dev X-Touch raw hex 90 48 01

or turn off

sendmidi dev X-Touch raw hex 90 48 00

Most switches on the X-Touch are also LEDs, unlike the Logic CONTROL
LED Off is 0x00 — LED On is 0x7f — LED Flash is 0x01