Features: 1.Compatibility with Smart Home Systems: The doorbell is compatible with existing smart home systems, providing a convenient way to manage visitors at your doorstep. Easily integrate it into your smart home setup. 2.Separate Design: Wireless Doorbell features a separate design, making it easy to install and maintain. It is suitable for various doorways and portals. 3.Highly Sensitive Sensor: The doorbell is equipped with a highly sensitive sensor, ensuring accurate detection of visitor movements. This allows for timely notification when someone approaches your door. 4.Stable Wireless Connection: Sensor doorbell operates on a wireless connection, providing a stable and reliable signal. It has a wide coverage range, ensuring that you receive notifications. 5.Multiple Music Options: With a selection of various music options, the wireless sensor Doorbell allows you to personalize the sound of your doorbell. Choose a tune that suits your style and preferences. Specification: Item Type: Sensor Doorbell_x000D_ Material: ABS_x000D_ Transmitter: Battery Type: Lithium Battery _x000D_ Battery Model: AAA batteries x3_x000D_ Ships without battery PackageList: 1 xTransmitter 1 xReceiver 1 xConnector 1 xBase 2 xScrews 2 xExpansion Screws 1 xEnglishInstructionManual