Melody customization - 45 unique melodies, 6 inviting voices, and a melody alarm for personalized notifications that fit your style and routine. This helps you recognize visitors quickly and choose alerts that are easy to hear in your space. Range - Effective operation up to 20 meters, so you can hear alerts from multiple rooms or areas in a home or business. This helps you stay aware of visitors without being in the immediate doorway. Wireless installation - Wire-free setup with no need for professional installation. Install quickly and securely wherever you need it, without complicated wiring. Use scenarios - Home entry: Place at the front door or entryway to greet visitors with your chosen melody and know immediately who has arrived. - Small business: Use at a storefront, reception, or office entrance to alert staff within the building when a visitor arrives. - Large space or showroom: Position in hallways or showroom entrances to ensure you receive timely alerts across a larger area without cables.