Do you know you are exposed to more and more electromagnetic field (EMF) radiation that may cause harm to your health and well-being. This Radiation Finder will detect EMF strength of all electrical appliances in your environment, and the manual tells you how to protect you from this danger. Easy to operate for everyday use. No technical background needed. Radiation finder stands out from other EMF radiation detectors. Use this meter to choose the appliances or cell phones with the lowest radiation levels and keep a safe distance from radiation sources. For cell phones, routers, microwave ovens, power lines, TVs, computers, electrical fans, AC alarm clocks, hair dryers, vacuum cleaners, and washers and dryers. 3 dimensional detection means easy, accurate and speedy detection of radiations in all directions. Detect both low frequency (LF) and high frequency (RF) radiation strength of all household appliances and wireless devices. Easy to use with Safe/Caution/Warning lights. No technical background needed. Indications: Green light: No EMF or HF radiation detected or it is at safe level. Yellow light: EMF or HF radiation is strong. Red light: EMF or HF radiation is very strong. Battery: 9V (not included). With visual alarm. 3 lights display, green/yellow/red for safe/caution/warning. Frequency range: 30 Hz to 5.5 GHz. Calibrated at 50/60 Hz and 2.4 GHz. Measures 6cm length by 2.6cm width by 13.4cm height. One year warranty.