Multifunction: This EMF reader meter has multiple functions including data hold & max measurement, one-key to lock the data, manual/auto shut off, safe value setting, and large LCD display of the values with the sound light system. All designed for your convenience. Automatically power off after 5 minutes of inactivity. Precise Measurement: This Multifunction EMF meter measures electromagnetic fields from 0.1 to 199.9mG with a resolution of 0.1mG/0.01T. Detect electric field range 1-1999V/M with 1V/M resolution and test ambient temperature range 1050 / 50122. LCD Backlight Display: Large and back-light LCD makes it easy to read. Even in conditions of darkness or poor visibility, a backlight display can provide you with a clear reading. Auto Sound & Light Alarm: When the testing result exceeds (Electric field > 40 V/M and Magnetic field> 0.4T or 4mG), it will trigger the sound & light alarm of the EMF tester. Application: Electromagnetic radiation monitoring (home and apartment, office, outdoor and industrial sites), electromagnetic radiation testing (mobile phone, computer, TV, refrigerator, high-voltage line radiation testing), radiation product testing (radiation resistance test effect) clothing, radiation protection film and other radiation protection products). Description: The EMF reader has multiple functions, including data hold and maximum measurement, one-key lock data, manual/auto shutdown, safe value setting, and large LCD display value with sound and light system. Auto power off after 5 minutes without operation. Everything is designed for your convenience. It detects invisible radiation around you, ensuring you have a healthy and safe daily life. The household electromagnetic field detector can be used to test any low-frequency household appliances such as TV, induction cooker, refrigerator, mobile phone, computer, wire, WIFI signal, wire tower, etc. Specification: Name: Multifunction EMF Meter/Radiation Detector/Digital Electromagnetic Field Taster Color: black+red Material: ABS plastics Size: about 192*53*35mm/7.6*2.1*1.4in Range: 0.1-199.9 mg Sampling rate: 0.5 seconds Alarm threshold: >4.0 mg Temperature range: 10C-50C Test bandwidth: 5HZ-3500MHZ Sampling time: about 0.4S Low voltage prompt: less than 6.8v Working temperature: 0-40 degrees Celsius Working humidity: 45%0-80%RH Power supply: 9V 6F22 Product List: 1*Multifunction EMF Meter Notes: 1. Due to the lighting effects and shooting angles, there is a color difference in the product, please understand. 2. Due to manual measurement, there is a tolerance in the product size.