Over-safety value alarm: The alarm value can be from 0.5, 1.0, 2.0, 2.5, 5.0, 10.0, 50.0, 100.0usv/h. You can choose the appropriate value according to your needs. display screen: The nuclear radiation detector adopts a LCD screen, allowing you to read the detection data clearly and easily, and get the results in time. Wide range of applications: Radiation testers can be widely used in nuclear power plants, accelerators, steel industry, industry, isotope applications, industrial X and r nondestructive testing, r radiation, laboratories and environmental monitoring around nuclear facilities. Portable Size: This handheld nuclear radiation detector is portable in size and easy to carry, you can put it in your bag and use it with you. Simple operation: You can enter the setting interface with one key, adjust the alarm preset value, and then bring the tester close to the object to get the result. Colour: Black material: plastic Package Contents: 1 x Emf Meter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.