1 set includes: 3 call buttons+1 bell receiver+3 hanging rope+3 double-sided tape+3 screw packages+1 screwdriver+1 instruction manual. Free 1 "Please Ring Bell" reminder sticker. The latest wireless call music ringtone set design, with a large call button design that is easy to press and use. Visitor call or emergency call, both scenarios can be used. Elderly caller: equipped with a hanging rope, it can be used as an SOS help button, installed on the wall next to the bed of the elderly or people who are not mobile, or in the toilet, bathroom, etc. When an emergency situation occurs and they need help, they can press the call button to remind you to pay attention. When you hear the music ring, you can help them as soon as possible.