Tread Mill Test Machine that also called Cardiac stress test is a cardiological test that measures the heart’s ability to respond to external stress in a controlled clinical environment. Labtech Tread Mill Test Machine Trainer is designed to demonstrate the operation, theory, repair and servicing of Tread Mill Test Machine. The unit is given the fault diagnosis so as to facilitate the teaching of trouble shooting techniques. A fault simulator is provided with circuit block diagram of the device for the students to study theoretically and experimentally in order to understand the operation of the device.