The MP-910W2 set consists of the MP-740R2 light and sound display and the MP-421D1 call button , which combines the " Do not enter" and "Enter" buttons ( shown by the corresponding icons) in a single case . The call button is installed in the office , and the light Board is installed in the corridor, where visitors are waiting in the queue for admission to the office. The figure shows a block diagram of the components of the MP-910W2 kit.

 To invite a visitor, the staff presses the button with the corresponding icon . At the same time, the led on the button lights up in a blinking green color. On the light and sound Board, the sign "ENTER" is highlighted in flashing green and a tonal sound signal is repeatedly played, attracting the attention of visitors. The user sees the sign "ENTER" and goes to the office. After the user enters the office, the employee clicks the button with the corresponding icon . At the same time, the led on the wired button lights up in a continuous red color. The sign "DO not ENTER" is highlighted in continuous red on the light Board, which informs other users that the employee is currently busy. The audio signal is not played in this case.
If you need to control from a second workstation, you can connect an additional MP-421D1 button or program the MP-411D1 radio buttons. In
the MP-910W2 kit can use one additional MP-421D1 call button.