The A4120104 is a high-tech voice control system manufactured by OKW for a variety of applications. It is a microprocessor-based control system that is capable of recognizing voice commands and turning them into electronic signals to perform a task. This technology is used in industrial, commercial and home applications to control a range of devices, such as lights, heating, alarms and even robotic machinery. The unit comes with four audio inputs, a microphone, and an RS-232 serial port. It also has a built-in LCD display, pushbutton and rotary switch, as well as multiple I/O ports. It is powered by 12V DC and offers an easy-to-use interface. The unit requires minimal installation and setup, making it an ideal automated solution for a range of applications.