D11 320m Remote Door Chime Intelligent 433MHz Wireless Doorbell Home Welcome Doorbell, EU Plug - Black •Enhanced Security and Convenience: This wireless doorbell operates on a 433MHz frequency, offering reliable and secure communication. With a range of up to 320 meters •Built-in dual speakers: Ideal for use in homes, offices, factories, and stores. The dual speakers ensure clear sound, making it perfect for welcoming guests or enhancing security •Customizable Alerts: Choose from 38 different ringtones to personalize your doorbell chime. Adjust the volume with three levels - high, medium, and low - using the dedicated volume control button on the receiver •Eco-Friendly Design: Built with a commitment to environmental safety, this doorbell is mercury, lead, and UV-free, ensuring zero pollution and contributing to a greener planet •Easy Installation: The transmitter should be mounted at a height of approximately 1.5 meters for optimal performance. Simply plug the receiver into a power outlet to get started. No complicated wiring or setup required Specifications: •Material: ABS •Working distance: up to 320 meters •Receiver size: 75*45*25mm •Transmitter size: 76*45*25mm •Receiver working voltage: 110-240V •Transmitter working voltage: 12V 23A battery * 2 (included) •Receiver buttons: •1) Music: 38 ringtones are optional, and the music logo button on the side is used for adjustment •2) Volume: Three-level volume adjustment (high, medium, low), and the volume logo button on the side is used for adjustment •3) Can be set to sound and silent (sound: sound + indicator light Silent: indicator light) Package included: •1 x Doorbell Receiver •1 x Doorbell Transmitter •1 x Double-sided Tape •1 x English User Manual