Description The 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 detection, detection of transformer substations, detection of mobile signal towers, etc., and it is simple and convenient to carry. With silent mode and alarm mode, test and pause mode, and the backlight can be turned on or off. Model: BR-9A Test range: Power density: 0-99.999w/c Electric field strength: 0-999.99v/m Magnetic field strength: 0-99.999T Test accuracy: Power density: 0.001w/c Electric field strength: 0.01v/m Magnetic field strength: 0.001T Frequency range: Power density: 50MHz-5GHz Electric field strength: 20Hz-100MHz Magnetic field strength: 20Hz-1MHz Battery: 3 * AA 1.5V battery or 3 * 1.2V rechargeable battery (not included) Charging: USB 5V 2A input Charging time: or equal to 4 hours Item weight: 100g / 3.5ounce color: blue Material: ABS size: Item size: 105 * 70 * 30mm / 4.1 * 2.8 * 1.2in Screen size: 57 * 43mm / 2.2 * 1.7in Package contents: 1 * Electromagnetic radiation detector 1 * User manual Note: Nuclear radiation cannot be tested Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture to be a little different from the real thing. The measurement allowed error is +/- 1-3 cm.