Check the listing for details. Retekess TD175 Wireless Restaurant Pager Queuing Calling System 30 Buzzers Cafes. Color: Black, Condition: New – Open box, Made in China. Listed at 120.00 USD. The Retekess TD175 Wireless Restaurant Pager Queuing Calling System is a sleek and efficient restaurant cordless buzzer designed for cafes and other food service establishments. With a working distance of up to 400 meters in open areas, this system features 30 black pagers with built-in 200mAh lithium batteries for easy use. The pager system offers customizable prompt times ranging from 1-999 seconds and has a variety of prompt modes including vibration, buzzer, and flashing. The transmitter and pager dimensions are compact, making it easy to use in any restaurant setting. Designed by Retekess, this restaurant service queuing paging system is reliable and user-friendly.