Functional differences: BR-9A-XR-2-PRO Function: Test electric field, magnetic field and radio frequency field, add temperature and humidity detection function BR-9A-XR-2 Function: Test electric and magnetic fields and radio frequencies BR-9A Function: Test electric, magnetic and radio frequency This detector can test electric field radiation and magnetic field emission to reach the optimal test result. It's widely used to test and learn electromagnetic radiation situation indoor and outdoor. Features: One detector 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 and appartment, 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. Model: XR-2Pro Add new functions: Temperature and humidity detection Test range: Power density: 0-99.999μw/c㎡ Electric field intensity: 0-999.99v/m Magnetic field intensity: 0-99.999μT Test accuracy: Power density: 0.001μw/c㎡ Electric field intensity: 0.01v/m Magnetic field intensity: 0.001μT Frequency range: Power density: 50MHz-5GHz Electric field intensity: 20Hz-100MHz Magnetic field intensity: 20Hz-1MHz Battery: 3 * AA 1.5V battery or 3 * 1.2V rechargeable battery (not included) Charging: USB 5V 2A input Charging time: greater than or equal to 4 hours Item weight: 100g / 3.5ounce colour:White/Black Material:ABS size:Item size: 105 * 70 * 30mm / 4.1 * 2.8 * 1.2in Screen size: 57 * 43mm / 2.2 * 1.7in