One click call for timely help wireless elderly pager. When you need help, just press the transmitter button and your family will know they need to come and help offers a wide selection of 60 melodies and 5 volume levels to meet your needs for different occasions. Flashing light with audio alert indicators which is easy for people including the hearing impaired to notice. Hanging rope design for wearing with a hanging rope, which can be carried around or hung around the neck. In case of emergency, send signals in a timely manner Home hospital bed/bedside call to assist in turning over. If there are elderly people or family members recovering from surgery at home who are taking medicine, caregivers cannot be by their side all the time. What should I do if I need help? With just one click, help and help can be provided in time. take care of The signal is stable, the call is unobstructed, and the penetrating performance is strong. The receiving distance can reach 300 meters in a straight line from the open air.ps: The actual received signal depends on the environment, and the signals are different due to different obstacles. Plug Type :EU Plug,it applies to Indonesia, Germany, France, Spain, Italy and so on. Voltage: AC 220V Type: Wireless doorbell Colour:Black Material:ABS Package Contents: 1 x transmitter 1 x receiver 1 x double sided tape 1 x doorbell sticker 2 x screws 1 x English instruction manual Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.