Signals & Systems [India] Pvt Ltd offers Trainer Module for Locomotive Engine. Signals & Systems [India] Pvt Ltd is an ISO 9001:2008 accredited company. Trainer Module for Locomotive Engine comprises all electrical circuits, which can be interfaced with the PC. The PC has front end software showing the mimic circuit diagram of all the electrical circuits. This simulated Trainer gives hands on experience on various electrical circuits, Control mechanisms and faulty conditions of the AC Locomotive Engine.