Continuous analyte sensor with magnetic activation

An analyte measurement kit, comprising:

• a sensor assembly having a transcutaneous sensor and a controller;
• the controller including a battery configured for powering the sensor assembly and a magnetic sensor configured to generate an activation signal in dependence of a magnetic field,
• wherein the controller switches from a pre-operative state into an operative state upon generation of the activation signal;
• an inserter,
• wherein the inserter and the sensor assembly comprise complementary couplers for releasable coupling;
• wherein the inserter is configured to execute an insertion movement that advances the sensor assembly from a retracted position in which the transcutaneous sensor is recessed behind a skin contact surface of the inserter into an advanced position in which the transcutaneous sensor projects beyond the skin contact surface, the insertion movement including subsequently retracting a piercing element from the skin, the insertion movement being complete before the inserter is removed from the sensor assembly;
• further wherein the inserter includes an activation magnet, and wherein the inserter executing the insertion movement is configured to cause a change of a magnetic coupling between the activation magnet and the sensor assembly to thereby generate the activation signal.