Features： 1、[Dual Purpose] Handheld radiation detector supports a dual purpose device, which can detect electric field and magnetic field radiation at the same time. 2、[Alarm Function] Radiation detector with sound and light alarm function, automatic alarm when exceeding the value; data lock, one key lock radiation value. 3、[LCD Trend Display] EMF meter uses LCD graphics to display the radiation value trend; radiation assessment, reminding whether the current radiation value is safe. 4、[Precise Measurement] Professional radiation tester, built in sensitive sensor, can accurately measure electric field radiation and magnetic field radiation. 5、[Small And Portable] A compact electromagnetic radiation tester with a stylish appearance and easy one hand operation for mobile or field measurements. Specification： Item Type: Radiation Detector Material: ABS Product Size: Approx. 12.5 x 6 x 3cm / 4.9 x 2.4 x 1.2in Unit: Electric Field: V/m (Volt Meter); Magnetic Field: μT Accuracy: Electric Field: 1V/m; Magnetic Field: 0.01μT Range: Electric Field: 1V/m~1999V/m; Magnetic Field: 0.01μT~99.99μT Alarm Threshold: Electric Field: 40V/m; Magnetic Field: 0.4μT Reading Display: 3~1/2 Bit LCD Display Test Bandwidth: 5Hz~3500MHz Sampling Time: About 0.4 Seconds Test Mode: Dual Mode Test Overload Prompt: LCD Displays "1" Battery: Matching 6F22 9V Battery Delivery, Capacity: 800mAh Package List： 1 x Radiation Detector 1 x Manual 1 x Battery