(4) Sensor Input Ports | (3) Servo Motor Output Ports
Connect up to three NXT Bricks
Requires 6 AA (1.5v) Batteries OR NXT Rechargeable Battery
This intelligent brick is the heart of NXT. Use it to build intelligent machines or robots. It features a ARM7 32-bit microprocessor, support for Bluetooth & USB 2.0. Requires 6 AA (1.5v) Batteries OR NXT Rechargeable Battery - BOTH NOT INCLUDED.