BR-11 Air Quality DetectorBR-9A Portable Electromagnetic Radiation DetectorWe all know that electromagnetic waves can reduce people's immunity and harm their fitness, so it is especially important to stay away from radiation. This hand-held portable electromagnetic radiation tester can accurately detect electromagnetic waves and meet the needs of various scenes, making it easy to carry.FeaturesLarge screen display makes it easier to read data, and the buttons are easy to operate.The housing is made of fine quality ABS, which has fine heat resistance and cold resistance, high strength and fine toughness.It can meet the needs of home life detection, substation detection, mobile signal tower detection, etc., and it is easy and convenient to carry around.With mute and alarm mode, test and pause mode, and the backlight can be turned on or off.SpecificationsMaterial: ABSColor: BlueModel: BR-9AScreen size: 57 * 43mm / 2.2 * 1.7inTest range:Power density: 0-99.999μw/c㎡Electric field intensity: 0-999.99v/mMagnetic field intensity: 0-99.999μTTest accuracy:Power density: 0.001μw/c㎡Electric field intensity: 0.01v/mMagnetic field intensity: 0.001μTFrequency range:Power density: 50MHz-5GHzElectric field intensity: 20Hz-100MHzMagnetic field intensity: 20Hz-1MHzBattery: 3 * AA 1.5V battery or 3 * 1.2V rechargeable battery (not included)Charging: USB 5V 2A inputCharging time: ≥4 hoursItem size: 105 * 70 * 30mm / 4.1 * 2.8 * 1.2inItem weight: 100g / 3.5ouncePackage size: 150 * 100 * 55mm / 5.9 * 3.9 * 2.2inPackage weight: 165g / 5.8ouncePackage list1 * Electromagnetic Radiation Detector1 * User Manual