EMB ERJ 145 ER/LR
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Aircraft Equipment Problem Less Severe
Flight Crew Rejected Takeoff; General Maintenance Action
Aircraft
While performing takeoff we experienced a Master Warning and triple chime for takeoff configuration; brakes. Since it was a configuration warning we deemed the aircraft unsafe to fly and aborted the takeoff at approximately at 115 knots IAS. We contacted the Tower and exited the runway. We subsequently contacted [Maintenance] and [Operations] and returned to the gate.We believe that there may have been an erroneous takeoff configuration sensor since we were accelerating at a high speed when we aborted. The conversation with Maintenance after the event confirmed this suspicion.We believe that this situation indicated an 'aircraft unsafe to fly' situation that warranted a rejected takeoff above 80 knots. Since the configuration warning was not immediately and specifically identified; we didn't know if the trim; spoilers or flaps had possibly came into a wrong position. We deemed that there was sufficient runway remaining and that a runway excursion would not be caused by the abort. All procedures and checklists were properly complied with prior to takeoff.
[Report narrative contained no additional information.]
EMB-145 flight crew reported a high speed rejected takeoff due to a takeoff configuration master warning; which was later found to be false.