Bluetooth 5.0 Accelerometer+Inclinometer] WT9011DCL MPU9250 High-Precision 9-axis Gyroscope+Angle(XY 0.2° Accuracy)+Magnetometer with Kalman Filter, Low-Power 3-axis AHRS IMU Sensor for Arduino: Amazon.com: Industrial & Scientific
DA5883 Compass on QMC5883L - 3-axis Digital Compass Magnetometer | Arduino, DIY \ Sensors \ Motion, Position & Touch
3 Axis Magnetometer Compass Magnetic Sensor Accuracy 0.15T/ LSB for Drone Accessories: Amazon.com: Industrial & Scientific
Triaxial Tri-Axis RF Field Strength Meter Electromagnetic Radiation Tester Detector 10MHz to 8GHz with Alarm and Tripod Mounting, Compact, Mini: Amazon.com: Industrial & Scientific