【3 in 1 Meter】: DANOPLUS EMF meter is equipped with electric field sensor, RF/microwave antenna, and magnetic field sensor. It can detect the strength of radiofrequency fields (RF), electric fields (EF), and magnetic fields (MF) 【Audible & Visual Alarm】: The EMF radiation meter features three-color backlight (green, yellow, red) and a sound alert function (can be turned off); The frequency of the sound alert varies based on the measured values 【Measuring Range】: Magnetic: 0.01-200 uT/0.1-2000 mG; Electric: 1-2000 V/m; RF: 0.001-100mW/㎡ 【Multi-function】: The functions of this radiation detector include: Auto Power Off/On, Alarm Tone On/Off, EF/RF/MF Mode Switch, Max Data, Data Hold, uT/mG Unit Switch, LCD Display, and Low battery indicator 【Wide Application】: Our EMF Reader has three modes that can be used in different environments. RF mode can detect radiation of mobile phone, signal transmission tower, Wi-Fi router (below 3.5GHz), Bluetooth and microwave radiation from appliances like microwave ovens. ELEC and MAG modes can electromagnetic radiation emitted by televisions, induction cookers, rice cookers, refrigerators, computers, and power lines. It can help you avoid the potential harm of high radiation environments to your body 3-in-1 EMF ELF RF Meter, AC Electric Magnetic Radiation Field Detector Portable EMF Meter RF Detector for EF/RF/MF/WiFi Signal/Microwave, Emf Radiation Meter Suitable for Home, Office, Ghost Hunting