Extech Emf/Elf Meter EMF/ELF Meter. Model: 480823. More details: EMF/ELF Meter, 0.01 to 19.99 microTesla
特制 用于测量 电磁场（EMF） 包括 电池
TME:
Electric field strength meter; LCD 1999; Sampling:2,5x/s
MASTER:
EMF/ELF Meter Measure Electromagnetic Field Radiation Levels
Electro Sonic:
EMF/ELF Meter Measure Electromagnetic Field Radiation Levels