Sensor arrangement for determining a coupled and/or uncoupled state between a first and a second coupling element (21, 22) of a coupling module of a drive shaft and an output shaft of a drive of a vehicle which can be driven by muscle power and additionally by motor power, in particular an electric bicycle, ebike or pedelec, comprising • a first sensor component which has at least one magnet sensor, wherein the first sensor component is formed ° (i) at a point on the underlying vehicle, which point is mechanically uncoupled from the position and movement of the coupling module, or is designed ° (ii) so as to move together with the second coupling element, and • a second sensor component which has a magnetic or magnetically influencing transmitter element, wherein the second sensor component is designed so as to move together with the first coupling element for magnetically influencing the first sensor component, characterized in that the sensor arrangement is designed • to detect a relative movement and/or a relative position of the first and second coupling elements (21, 22) in relation to one another on the basis of a magnetic measurement variable or a measurement variable derived therefrom which is or are dependent on the relative movement and/or the relative position of the first and second coupling elements (21, 22) in relation to one another and/or of the first coupling element relative to a point on the underlying vehicle, which point is mechanically uncoupled from the position and movement of the coupling module, and • to determine the presence or absence of a coupled and/or an uncoupled state between the first and second coupling elements (21, 22) and therefore of the drive shaft and the output shaft of the drive from the relative movement and/or a relative position of the first and second coupling elements (21, 22). • a first sensor component which has at least one magnet sensor, wherein the first sensor component is formed ° (i) at a point on the underlying vehicle, which point is mechanically uncoupled from the position and movement of the coupling module, or is designed ° (ii) so as to move together with the second coupling element, and ° (i) at a point on the underlying vehicle, which point is mechanically uncoupled from the position and movement of the coupling module, or is designed ° (ii) so as to move together with the second coupling element, and • a second sensor component which has a magnetic or magnetically influencing transmitter element, wherein the second sensor component is designed so as to move together with the first coupling element for magnetically influencing the first sensor component, characterized in that the sensor arrangement is designed • to detect a relative movement and/or a relative position of the first and second coupling elements (21, 22) in relation to one another on the basis of a magnetic measurement variable or a measurement variable derived therefrom which is or are dependent on the relative movement and/or the relative position of the first and second coupling elements (21, 22) in relation to one another and/or of the first coupling element relative to a point on the underlying vehicle, which point is mechanically uncoupled from the position and movement of the coupling module, and • to determine the presence or absence of a coupled and/or an uncoupled state between the first and second coupling elements (21, 22) and therefore of the drive shaft and the output shaft of the drive from the relative movement and/or a relative position of the first and second coupling elements (21, 22).