Mechanism with call button (red) and cancellation button (green). It sends incidents via radio frequency to the bracelets, signalling lamps or informational screens of the system. Includes a bed control with call button (red), wall-mountable support base, and extendable cable of 180 cm. Ongoing call indicator (red LED). Powered by two CR2032 batteries with an approximate duration of up to 24 months. Constructed from impact and splash-resistant plastic.