1For radiation hazard radius of loop undesirable three plug electrical in the electricity use. 2For radiation hazard radius of all the two plug electrical in the electricity use. 3For radiation hazard radius of high voltage transmission line tower. 4For radiation hazard radius of using GSM mobile phone dialing. 5Abnormal fluctuations of electromagnetic radiation in other environments.Features:1. For radiation hazard radius of loop undesirable three plug electrical in the electricity use.2. For radiation hazard radius of all the two plug electrical in the electricity use.3. For radiation hazard radius of high voltage transmission line tower.4. For radiation hazard radius of using GSM mobile phone dialing.5. Abnormal fluctuations of electromagnetic radiation in other environments.6. As a primary detection tools for all kinds of electromagnetic radiation protective equipment.7. It can not only measure the electromagnetic radiation from home appliances and computers, but also measure the radiation from mobile phones.8. Easy to operate with easy one-hand operation, easy to carry and make field measurement.Specification:Condition: 100% Brand NewItem Type:ElectromagneticRadiation DetectorMaterial: ABSSize: Approx. 145 x 20 x 20mm / 5.7 x 0.8 x 0.8inPower Supply: 1.5V(AAA)x 2 (Not included)Detect Range: 50uw/cmPackage List:1 xElectromagneticRadiation Detector Pen1 x InstructionNote:1.To replace the battery in time, so as not to cause the battery aging and liquid leakage, if not, the circuit board will be damaged.2. When the voice alarm call before a wea