Room mechanism for flush mounting. It has a call key, presence key and call in progress and active presence indicator lights. It incorporates a handle to generate an emergency call, being suitable for installation in bathrooms. With USB type B connector for connection of the U-ML model bed control, control disconnection warning and outputs for control of up to 2 contactors. It is installed in a universal box, both standard and for false partitions. Compatible with frames of the M-420 series and with most series of electrical equipment.