Mini Electromagnetic Radiation Detector High Sensitive Pen Type Emf Meters Electromagnetic Wave Radi Mini Electromagnetic Radiation Detector High Sensitive Pen Type EMF Meters Electromagnetic Wave Radiation Test Pen Non-Contact EMF Tester Electromagnetic Field Detecting PenFeatures:Reliable and fast measurement of electric field intensity, magnetic field intensity, radiation power static electricity, etc.If the radiation exceeds the standard, the alarm will sound and the red light will shine.Plastic case + metal electronic core, sturdy and high accuracy.Inductive non-contact test, it has a sensitive response to the radiation generated by household appliances, such as computers, televisions, refrigerators, air conditioners and rice cookers.Suitable for electromagnetic wave radiation pollution test in ordinary household environment, computer room, control room.Specifications:Material: PPFrequency: 50~500HzOperating Temperature: 32~122 (0~50)Alarm Mode: Sound and light alarmPower Supply: 2 * 1.5V AAA battery (NOT included)Item Size: 148 * 25 * 20mm / 5.83 * 0.98 * 0.79inItem Weight: 50g / 1.76ozPackage Weight: 65g / 2.29ozPackage Size: 16 * 3.5 * 3cm / 6.30 * 1.38 * 1.18inPacking List:1 * Digital Tester