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Our EMF Meter with two uses, it can test the electric field and the magnetic field radiation at the same time. When the test result exceeds the safe value, the instrument will alarm automatically. Data hold and clear LCD display, one-key can lock the radiation value and easily read the value. Radiation assessment can remind you whether the radiation value is safe. Easy to use and operate, easy to move or for on-site. Measurements: Electromagnetic radiation monitoring: Household, apartment, office, outdoor and industrial site. Electromagnetic radiation test: mobile phone, computer, TV set, refrigerator and high voltage cable radiation test. Radiation protection product test: test effects of radiation-proof clothes, radiation-proof film and other prevention articles. Equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on the clear LCD digital display after processing by control micro-chip. Specifications: Material: ABS Color: Silver Power supply: 3 * 1.5V AAA battery Precision: Electric field: 1 V/m Magnetic field: 0.01uT Range: Electric field: 1-1999V/m Magnetic field: 0.01uT -99.99uT Reading display: 3-1/2-digit LCD Alarm threshold value: Electric field: 40V/m Magnetic field: 0.4uT Testing bandwidth: 5Hz-3500MHz Sampling time: about 0.4 seconds Test mode: bimodule synchronous test Operating temperature: 0-50 deg C / 30 deg F-122 deg F Operating humidity: relative humidity<80% Item size: 5.12*2.44*1.02in Item weight: 3.8ounce Packing:1*Electromagnetic Radiation Tester 1*User Manual 1*Package Box