Simply switch on the device and read the values! Light weight and completely equipped the TriMag is ideal for professional or home applications. TriMag measures very accurately extremely low frequencies (ELF), which are generated by electrical appliances. Applications are possible like measurement of magnetic field emissions of a broad range of sources like PC monitors, respective screens, AC mains cables, office equipment, home appliances and all types of electrical and electronic devices. Options on request: digital output and chart recorder output Technical data:Measuring range: 5nT - 42,000nT (optional display in mG units possible)Resolution: 5nTAccuracy: ±5% typicalFrequency range: 0 Hz - 200 kHz ±3 dBCalibration frequency: 50 HzSizes: 150 x 85 x 30 mm³Weight: ca. 250 gPower supply: 9 V batteryCurrent drain: ca. 30 mAPorts: optional serial and chart recorder outputDisplay: digital and analog LCD