1、Good EMF Meter: This 3 in 1 EMF meter can test electric field, magnetic field and temperature as well, which has 5Hz~3500MHz test bandwidth. 2、Smart Maximum Mode: The Maximum mode can test the maximum value to help you better locate the position and strength of the electromagnetic field. 3、Alarm Function: As the radiation increases, the LED indicator will change from green to yellow and red, and the alarm sound will go faster. 4、Data Retention: Supports digital display, the EMF detector also comes with data retention function to largely simplify the data recording. 5、Extensive Uses: Allows for broad application on the testing of TV, induction cooker, rice cooker, refrigerator, computer, electric wire, etc. Item Type: EMF Meter Material: ABS Battery: 1 x 9V polymer battery, shipped without battery. Electric Field: 1~1999V/M Magnetic Field: 0.01uT-19.99uT/0.1-199.9mG Electric Field Alarm Threshold: > 40V/m Magnetic Field Alarm Threshold: > 0.4uT Test Bandwidth: 5Hz~3500MHz 1 x EMF Meter 1 x User Manual 1 x Storage Bag