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. Specifications: Material: ABS Electromagnetic Frequency Response Range: 5~300Hz Electromagnetic Intensity Range: 0.1~199.9mG Resolution: 0.1mG Alarm Threshold: >4.0mG Accuracy: 15% Electromagnetic Intensity Range: 0.01-19. 99uT Resolution: 0.01uT Alarm Threshold: 0.4uT Accuracy: 15% Electric Field Strength Frequency Response Range: 4Hz~3.5GHz Range of Electric Field Strength: 1~1999V/M Resolution: 1V/M Alarm Threshold: >40V/M Accuracy: 15% Temperature Range: -20~60 Accuracy: 2 Power Supply: 3 * 1.5V AAA battery (NOT included) Item Size: 220 * 60 * 55mm / 8.66 * 2.36 * 2.16in Item Weight: 170g / 6.01oz Package Weight: 229g / 8.09oz Package Size: 24.2 * 7.7 * 5.7cm / 9.53 * 3.03 * 2.24in Packing List: 1 * Tester 1 * Manual (English)