Check the listing for details. Digital LCD Electromagnetic Radiation Detector EM Multi-Meter Dosimeter DT-1130. Condition: New, Made in China. Listed at 17.99 USD. Excellent design for a measurement of electromagnetic field radiation levels around power lines, home appliances and industrial devices. Used widely in electrical equipment, electromagnetic radiation measurement: phones, computers, televisions, copiers, fax machines, air conditioners, refrigerators and other radiation sources teste Accurate and safety to use Specifications Material: ABS Plastic Display: 3 1/2 digits (Max. indication 1999) Range: 50Hz-2000MHz Number of axis: Single Axis Sampling time: Approx. 0.4 second Working Voltage: 9V Powered By: 1 x 6F22 9V Battery ( not included) Size: 132mm(L) x 69mm(W) x 29mm(H) Weight: 140g Package Included 1x Digital Electromagnetic Electrical Radiation Detector 1x Instructions.