From The Stargate Omnipedia
Multi-pronged handheld Goa'uld
device used in conjunction with a Tok'ra
memory device, used to torture a subject until the individual allows his or her mind to be pliable. A green indicator on the top of the unit marks the charge (or intensity). The device can work within several meters of the subject.
Stronghold - Baal orders his Jaffa to use the brainwashing device on various members of Jaffa parliament to sway them toward his beliefs.