Usage:The receiver in hospital ,clinic and other places for server receiving the calling messages of customers.
Usage:The receiver in western-style restaurant and other places for server receiving the calling messages of customers.
Usage:The receiver in beauty parlor and other places for server receiving the calling messages of customers.
Usage:The receiver in airport,station and other places for security man receiving the alarm calling messages.
Usage:The receiver in chamber,chess room and other places for server receiving the calling messages of customers.
Usage:The receiver in court, prison and other places for security staff receiving the calling messages of customers.
Usage:The receiver in hotel and other places for server receiving the calling messages of customers.
Usage:The receiver in hotel and other places for server receiving the calling messages of customers.
Usage:The receiver in taproom and other places for server receiving the calling messages of customers.