The term 'Electric Eye, E.G.' is a reference to a type of SENSOR, which is a device that detects and responds to some type of input from the physical environment. In this case, the SENSOR is an electric eye, which is a device that uses light to detect the presence of an object. It works by emitting a beam of light that is then reflected off of the object, which triggers the SENSOR to send a signal. This type of SENSOR is commonly used in security systems, as it can detect the presence of an intruder and trigger an alarm.