Bullet Points: 1. Precise Measurement: You can use this EMF tester to test PC, Laptop, TV, cell phone, microwave oven, refrigerator, telephone, WIFI router, cell towers, for all kinds of home appliances, and ghost hunting, etc. 2. Accurate Test Result: Easy to operate and move for on-site measurements, effectively identify the magnetic field source and electric field source. Equipped with high quality built-in electromagnetic radiation sensor and micro-chip, making the test result more precise. 3. Sound-light Alarming System: When the testing result exceeds the value(electric field > 40 V/M and magnetic field > 0.4 T or 4 mG), the indicator will be flashing, and the buzzer will alarm. If youre testing some quiet areas, you can close the buzzer first by long press the middle button, avoid disturbing the others. 4. Multi-function: Automatic shutdown after 5 minutes of inactivity. Large backlit LCD display, rechargeable battery, average and peak_readings, data hold function, two unit options, temperature measurement. 5. Wide Range of Application: Our EMF Meter can be widely used test the power source for TV, computer, printer, microwave oven, refrigerator, cell towers, low-frequency home appliances, and ghost hunting, etc. Description: Making Life more Safe & Comfort: This EMF Tester can be used on testing PC, Laptop, TV, cell phone, microwave oven, refrigerator, telephone, WIFI router, cell towers, for all kinds of home appliances, and ghost hunting, etc. Multi-function: Large and back-light LCD makes it easy to read, rechargeable battery, average and peak_value reading, data hold function, two units option, and temperature measurement. Auto power off after 5 minutes without operation. Specification: Product Name: EMF Meter Size: about 133*60*25mm/5.24*2.36*1in Unit: V/m(Electric field),T(Magnetic field),/(Ambient temperature) Measuring range: about 1V/m-1999V/m(Electric field), 0.01T-99.99T(Magnetic field) Alarm Threshold: about 40V/m(Electric field),0.4T(Magnetic field) Long pressing the middle button can turn on/off the sound alarm. Packing List: 1* EMF Meter