tDCS Device - TheBrainDriver v2. tDCS Digital Precision + Safety Features. (Everything Included. Ready-to-Use). 20 & 30 Minute Safety Timer with Automatic Shut-Off 4 Selectable Current Levels; 0.5mA, 1.0mA, 1.5mA, 2.0mA Newly Designed Circuitry Makes it Pocket-Sized & Portable for Travel Automatic Safety Shut-Off When Not In Use Overload Protection with Safety Shut off