This Extremely Low Frequency (ELF) and Voice Frequency (VF) single-axis magnetic field sensor provides a flat frequency response over a wide frequency range, resulting in superior accuracy for measuring fields from electrical and electronic equipment, building wiring, electric machinery, computer monitors, office equipment, fluorescent lights, TVs, appliances, dimmer switches, power lines and harmonics, pumps, ceiling tracks, aircraft (400 Hz), ships, subways, electric cars and rail. Display instrument resolution of 0.1 mV AC or better is recommended for most applications. Flat response over a wide frequency range provides an easy, accurate, and low-cost field measurement and troubleshooting tool:25 Hz to 3 kHz is the 3 dB bandwidth 5 Hz to 20 kHz is the 15 dB bandwidthEach sensor undergoes a NIST traceable calibration to ensure accuracy: +/- 3% typical calibration tolerance (+/- 5% worst case) from 50 Hz to 1000 Hz Calibrated to ANSI Standard 644-1987. Certificate included. Accurately measures through eleventh harmonic with ANSI Standard 644-1987 Cost: $ 95. 
