Features: 1. Easy to use, low cost. Simple operation and fast measurement. 2. Data locking, one-key lock of the radiation value. LCD display of the values for easier reading. 3.Wide test band width from 5Hz ~ 3500MHz. 4.Designed to meet CE industrial standard. Great for home, office, computer room, control room,etc. 5.Compatible with the electric field and the magnetic field radiation measurement. specification:Description: This meter can test electric field radiation and magnetic field emission to reach the optimal test result. It is used to test and learn electromagnetic radiation situation indoor and outdoor. It is equipped with a built-in 6F22 battery for both indoor and outdoor use. Easy to use, low cost. Simple operation and fast measurement. Data locking, one-key lock of the radiation value. LCD display of the values for easier reading. Wide test band width from 5Hz ~ 3500MHz Designed to meet CE industrial standard. Great for home, office, computer room, control room,etc. Compatible with the electric field and the magnetic field radiation measurement. s: Color: Black (Shown as the pictures) Size: 132 (length) x 69 (width) x 31mm (thick) / 5.20 x 2.72 x 1.22'' Package weight: 216g Readings display: 3-1 / 2 bit LCD display Level: electric field - V / m (volts / m); magnetic field - T (micro Tesla) Accuracy: electric field: 1V / m; Magnetic field: 0.01T Range: Electric field: 1V / m-1999V / m; Magnetic field: 0.01 T to 19.99 T Alarm threshold: electric field: 40V / m; Magnetic field: 0.4T Test bandwidth: 5Hz-3500MHz Sampling time: about 0.4 seconds Sensor head: single axes (instrument top) Overload warning: LCD display "1" Operating temperature: -15 - +60 Operating humidity: relative humidity below 80% Operating voltage: 9V Battery: built-in 9 V 6F22 battery Application Scope: 1. Outdoor environmental electromagnetic radiation testing: substation, high voltage lines, transformers, power distribution rooms, cables, cell phone towers, TV signal towers, radio signal towers and other sources of measurement. 2. Indoor environment electromagnetic radiation testing: computer, TV, copier, fax machine, air conditioning, refrigerator, audio, washing machine, wire, power supply, mobile phone, wireless router and other power sources of test analysis Note: Please allow 1-3mm error due to manual measurement and there will be different color as different display, please understand. Thanks. Package Included: 1 x Electromagnetic Radiation Detector 1 x User Manual