3-Axis Gauss EMF ELF Meter Detector, Electromagnetic Field Radiation Intensity 20/200/ 2000 mG & uT, Frequency 30~2000 Hz, Handheld Portable Gauge for Microwave Computer Monitor Power Line
color tree Handheld LED EMF Magnetic Field Ghost Hunting Detector Electromagnetic Paranormal Equipment Tester 50Hz-20,000Hz Black
