WIDELY USEDThis EMF meter is equipped with built-in high precision electromagnetic radiation sensor, it will help you monitor the electromagnetic radiation in your house, apartment, office. Outdoor and industrial site, it has high test accuracy on mobile phone, computer, TV, refrigerator and high voltage cable radiation. ELECTROMAGNETIC POLLUTIONElectromagnetic radiation is a new type of pollution known as invisible killer, which can cause direct damage to human genital system, nervous system, visual system and immune system, especially for pregnant women and children. we can prevent EMF radiation damage more effectively by using this professional EMF tester. HIGH ACCURACYElectrical Field Testing Range: 1 ~ 1999 v/m, with accuracy up to 1 v/m; Magnetic field test range: 0.01T~99.99T, accuracy up to 0.01T. Please measure high pressure installations remotely to ensure safety when using this electric/magnetic field monitor. LIGHT AND SOUND ALARMWhen the electric field strength exceeds 40v/m or If the magnetic field strength exceeds 0.4T, this EMF Meter"s alarm will start buzzing and the LED light will turn RED and flash continuously, which makes the detector more easy and convenient to use. GHOST HUNTINGWe know that some of our customers use this tester as ghost hunting equipment, but our original intention of producing this product is to accurately monitor electromagnetic radiation with the aim of protecting our body and environment, this that the EMF meter can only detect the situation where the electromagnetic radiation has appeared or changed. Working temperature: 0C-50C/30F~122F Item Size: 130 x 60 x 25 mm. Product weight: 121 grams Package Included 1 x Electromagnetic Radiation Detector 1 x User Manual (English) Please carefully confirm your size, name &number and shipping address before placing the order, thus to assure the delivery efficiency and avoid unnecessary trouble About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 6-8 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 18845 hours, wish you a happy shopping Thanks for your cooperation and we& 39;ll make you feel satisfied.