Features: The measurement frequency range is larger up to 5HZ-3 500HZ This EMF meter detects invisible radiation around you make sure you have a healthy safe daily life Can be used to test TV, induction cooker, refrigerator, smartphone, computer, electrical wires, WIFI signal, wire tower, any other low-frequency home appliances, or Ghost Hunting etc This EMF meter tests electromagnetic field range from 0 1 to 99 99mG with a resolution of 0 01T Detects electric field range 1-1999V/for M with 1V/for M resolution tests ambient temperature range -1070 This EMF reader meter has multiple functions includes data hold and max/min/average measurement, data hold Specifications: Material: plastomer Size: approx 152x52x26 5mm/6x2x1-inch Display: 3-1/2 digits LCD Frequency: 5-3500Hz Sample time: 0 4 seconds Testing mode: dual Operating temperature: 0-50 Working voltgae: DC4 5V Power supply: 3x 1 5V Note: Please allow 1-3cm error due to manual measurement pls make sure you do not mind before you bid Due to the difference between different monitors, the picture may not reflect the actual color of the item Package includes: 1x EMF Meter