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. This bundle kit also includes qty. 4 Type K thermocouples and associated mounting hardware.