1.220V hotel doorbell switch 2.Plastic+Zinc alloy 3.Feature:Display room No.,service requirements,such as DND,Make up room Item:hotel doorbell switch Size:R= 150, High voltage 220V door chime:Directly connect it to 220 Power source live wireFunctions and Feature: 1.Can display hotel room number,Do not disturb , and so on.Match a doorbell to use together.2.Can press the doorbell(It is Weak ...