These sensors measure magnetic fields from 5 kHz to 1 MHz.MC110R offers a peaked response for maximum output voltage. MC110A offers a flatter response over wide frequency rangeApproximately 5 mV AC per milliGauss from 50 kHz to 400 kHzSmall sensor size allows more exact positioning of field measurements. Each sensor undergoes NIST traceable calibration to ensure accuracy Individual calibration data table is delivered with each sensor Estimated accuracy of calibration is +/- 10 % of magnetic field MC110A $ 150. MC110R $ 150. 
