Features: Experience unparalleled convenience with our wireless doorbell featuring double power option, various LED alerts, ensuring you never missing a visitor. Crafted from abs material, this doorbell boasts waterproof and dustproof capabilities, making it ideal for both indoor and outdoor use, while offering 38 customizable chimes. Perfect for homeowners, office managers, and shop owners seek easy to install, reliable communication solution that enhances security and interaction. Whether in a bustling office, or a busy retail environment, this wireless doorbell adapts seamlessly, providing clear notifications and visual alerts to suit any setting. With its user friendly interfaces and flexible configuration option, our doorbell system supports multiple receivers and transmitters, catering to large homes and multiple story buildings effortlessly. Specifications: Component:ABS Receiver Size: Approx.90.5x60.2x25.4mm/3.56x2.37x1inch Transmitter Size: Approx.78x42x18mm/3.07x1.65x0.7inch Quantity:1 Set/3 Set Package Includes: 1 Set Wireless Doorbell note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.