This Portable Doorbell with Kinetic Bell Push can be wall mounted as well as being free-standing, to place wherever you need in your home or garden.The bell push is weather resistant and uses a kinetic mechanism – so no battery is required. There are three modes: chime sound only, white flashing light only, or both together. There are 26 different chimes to choose from. This Portable Doorbell features an impressive wireless range of 100 meters, and a sound output of 85dB.