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 industrial site, it has high test accuracy on mobile phone, computer, TV, refrigerator 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 immune system, especially for pregnant women 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 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 the LED light will turn RED flash continuously, which makes the detector more easy 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 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)