- MOTION SENSOR DOORBELL: Equipped with a smart chip, this doorbell features an impressive inductive distance of 4-6 meters. It can operate on a dry battery (not included) or can be easily charged via USB, with a single charge lasting 3-5 months for convenience. - VOLUME ADJUSTMENT: Customize your experience with adjustable volume settings available in weak, medium, and strong levels. Choose from a variety of pleasant ringtones to suit your preference. - PERSONALIZED VOICE RECORDING: Enjoy the ability to record and broadcast your own voice messages. Simply long-press to activate recording mode and enter a specific voice message for personalized interaction. - WIDE APPLICATION: This motion sensor doorbell is ideal for a range of settings, including homes, apartments, shops, and supermarkets. It is especially beneficial for the elderly, individuals with disabilities, pregnant women, and anyone who may require additional assistance in receiving visitors. Use Cases: 1. In a busy household, easily monitor who is at the door from a distance without needing to be right next to the entry point. 2. In a retail environment, enhance customer service by welcoming visitors with a personalized voice message when they approach the entrance. 3. For elderly family members, provide a sense of security and ease by using the doorbell's motion detection to alert them of approaching guests. This doorbell combines advanced technology with user-friendly features, making it an essential addition to any home or business.