Powerful Signal, Everywhere Enjoy a robust 300-meter range in open areas, ensuring you never miss a visitor. Whether you're in the backyard, upstairs, or even the basement, stay connected. Install in Seconds Effortlessly mount the wireless doorbell transmitter to your wall using the included screws or tape. Enjoy hassle-free installation in under a minute. All-Weather Performance Our wireless doorbell is dust and water-resistant, withstanding temperatures from -30°C to 70°C. It endures tough conditions while boasting extremely low power consumption for a long-lasting battery life of 1 to 3 years. Personalized Sound, Flexible Modes Enjoy precise control with 5 volume levels up to 110 dB, perfect for the hearing impaired or elderly. Easily switch between LED-only mode or LED + chime, and choose from 55 melodies for personalized alerts. Your latest settings are saved for uninterrupted convenience. Music to Your Ears Select from a large playlist of 55 melodies to find your perfect match. Memory Function This wireless doorbell features an internal memory function, remembering your last settings. Silent Mode For undisturbed peace, set the volume to 0; the LED light will continue to flash as an indicator. Compact Design Includes 2 Doorbell Receivers / 1 Doorbell Transmitter / 1 User Manual / 1 Doorbell Plate / 1 Installation Kit