EMF meter for measuring electric field strength, radiated power, magnetic field strength and static magnetic field polarity, effective measurement range is 50MHz-3.5GHz. built-in magnetic field and electric field sensors accurate data for EF RF MF testing; the protection level of the electromagnetic radiation detector is IP3X, which is durable. The rechargeable EMF device features a TFT 2.0 color screen and graphical for easy and intuitive use. Sound and flash alerts can be , with adjustable alert thresholds. It also provides electric field and magnetic field waveform display mode, standby for 16 hours. It can detect radio frequency and measure the electromagnetic radiation of household appliances. Very suitable for office workers, pregnant women, and the elderly. Use it to test for magnetic and electric fields from sources such as cell phone towers and low frequency equipment to limit exposure to potentially harmful Colour:White Material:plastic Package Contents: 1 x EMF Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.