Logic Controller, Input Voltage 24V DC, Output Type Relay, 2.0 A Amps, Non isolated serial link serial 1 RJ45 RS485, Non isolated serial link serial 2 RJ45 RS232/RS485, USB port mini B USB 2.0 Slots, Number of Inputs 8, Number of Outputs 8, Counters 255, Timers Programmable, Yes Clock, No Display Display, Port Type Non isolated serial link serial, USB port mini B, Memory 256 KB RAM