The 12.1-in. and 15-in. TPC-1251T and TPC-1551T touch-panel computers feature Intel Atom E3827 1.75-GHz processors and the company’s iDoor system, so users can choose only the functions they need among isolated DI/O ports, Profibus, CANopen, or Wi-Fi, 3G and GPS. They have two USB 3.0 ports, a PCI slot and 4 GB DDR3L SDRAM, with overall IP66 protection against dust and water and IP65 protection on the front panel.