The M2 series switch is an innovative wireless device that generates power from pressing, eliminating the need for batteries. Equipped with an energy harvesting module, it converts the mechanical energy into electrical energy to drive the RF chip. With an IP67 waterproof rating, the switch is ideal for use in damp environments, such as controlling the bath bar and electric clothes dryer. It offers 2, 4, 6, or 8 key options to accommodate various needs and can be easily installed in new indoor settings.