The Tc - 4 Plus Is 4 Channel Type - K Thermocouple Amplifier Device That Can Be Used A Stand - Alone System Or As Part Of A Mts (Modular Tuning System). The Tc - 4 Plus Includes A Digital InputOutput, 4 Full - Programmable Analog Outputs, And Is Ideal For Applications Such As Dynamometers, Data Acquisition Systems, Or Standalone Ecus. The Tc - 4 Is Also A Key Component Of Innovate Motorsports Modular Tuning System (Mts). Using The Tc - 4 Pluss Serial Ports You Can Daisy - Chain Other Innovate Devices Such As The Mtx - L, Lm - 2, Lc - 2, And Ssi - 4 Plus.