This wireless doorbell operates on a frequency of 433.92mhz+-75khz and comes in a sleek rectangular shape. It is powered by a battery and includes the doorbell receiver, user manual, doorbell, button, screws, battery, transmitter, and adhesive patch. With a modern and durable design, this doorbell is suitable for use in various settings such as offices, shops, schools, and homes. It features special attributes such as fast shipping, energy-saving technology, and a weather-proof construction.