The Hoco HI25 Low-Power Wireless Doorbell Set features a compact design with a push button that allows for a range of up to 150 meters. It operates on a low power output, ensuring a battery life of up to 6 months. The doorbell includes multiple chime options, allowing you to choose from 60 different melodies to suit your preference. The set is easy to install, requiring no complicated wiring, making it a practical addition for any home or office entry point. Included in the box are the wireless chime unit and a button, providing everything needed for immediate use.