Sensor arrangement for determining a coupled and/or uncoupled state between a first and a second coupling element 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 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 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 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 . • 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 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 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 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 . <EOS>