The waterproof remote pendant is a transmitter operating on a frequency of 433.92MHz. Its range depends on a number of environmental factors, however it will generally function within and even beyond a 50 metre radius of the Smart Dialler. In many cases it operates in excess of 50 metres, making it suitable for providing excellent coverage within the perimeters of even a relatively large home and garden area. If you wish you can boost the aerial range by purchasing an aerial booster from our website. It does need power to operate and will need to be placed in a strategic location such that it will ensure 100+ metre range.