Wireless Single-User Queuing Set Basic Price Includes 1 indicator and 1 remote control. It communicates with RF, works within 50 meters in a closed area, and improvement is made with a signal amplifier in larger areas. The system includes a remote control, over-the-door display panel and adapters. The base price in the ad is the price for the control and display panel. The user calls those waiting in line by pressing the button on the remote control. When you press the button, an audible and visual warning is given from the display panel. When the turn is taken, the display panel starts counting from 1. It counts up to 999. It is an asynchronous system. When you press the reset button on the remote control, it performs the reset process. Instrument Panel Dimension: 12x30 cm. Three Digit Display. It is wireless. Our products are our own production and are guaranteed against manufacturing defects for 2 years.