To provide a nurse call device having a base unit, which is light when its operation is carried out and superior in external appearance, enables unit number setting on a chasis side, and is suitable for standardization of a unit.

The master unit consists of an operation panel unit 20, having calling and speaking function to a slave set, each selection panel unit 40 for selecting slave sets, and a chasis 50 for attaching and fixing the panel unit; the chasis has a first hook part 51 each for fixing the unit, which has an oblong screw fixing part for changing positions of a protrusion to be suspended from the first hook part and the unit, while being fixed temporarily; a vertical surface and a slanted surface are formed on a unit side surface part; a second hook part 52 is formed in the chasis; and engaging holes 63 for suspending from the second hook part are formed on a unit side surface. A decoration panel 120 is fixed to vacant engaging holes.