Product Features: Practical EMF Meter: for measuring the electromagnetic radiation of household appliances. Wide Application: can be apply on various household appliances such as television, fan, induction cookers, etc. LCD Display with Backlight: 2-inch screen is large and easy to read, you can manual ON/OFF the backlight. Data Hold & MAX Measurement: data retention and maximum value display, one key switchable. Torch & Unit Switching: auxiliary lights up the working area in the darkness, uT/mG unit switching. Compact Design & Solid Quality: convenient for one-handed operation, and has good quality for long time using.