Features One machine with dual use: The electromagnetic radiation meter can be used with one machine, and it can test electric and magnetic field radiation at the same time. Sound and light warning: In the process of using the electromagnetic radiation detector, when the test result exceeds the safe value, the instrument will automatically emit warning light and sound Radiation evaluation: The digital electromagnetic radiation measurement counter locks the radiation value with one key and has a radiation evaluation function, which can remind you to confirm whether the radiation value is within the safe range. Liquid crystal display: Digital LCD radiation detector is equipped with a large and clear liquid crystal display, and uses a 3-1/2 liquid crystal display for easy reading Convenient measurement: The digital radiation tester is stylish in design, small in size, easy to operate, easy to carry, convenient on-site measurement, very suitable for your work or daily use Features: One instrument used for two purposes, can test both electric and magnetic field radiation stimutaneously. Sound and light alarm: When test result exceeds the safe value, the instrument will automatically alarm. Data locking: Press one button to lock the radiation value. Radiation assessment: To Remind you of making sure whether the radiation value is in the safe range. Large and clear LCD display screen for easy reading. Stylish design, compact size, simple operation, easy to carry and convenient for on-site measurement. Specification: Model: GM3120 Material: Plastic Color: Shown As Picture Unit: V/m (Electric Field); μT(Magnetic Field) Accuracy: Electric: 0.01V/m; Magnetic: 0.01μT Range:  Electric: 0.01-1999V/m; Magnetic: 0.01-99.99μT Alarm Threshold: Electric: 40V/m; Magnetic: 0.4μT Display: 3-1/2 LCD Display Test Bandwidth: 5Hz-3500MHz Sample Time: About 0.4 Seconds Test Mode: Dual Mode Synchronous Test Overrange Indication: LCD Displays "1" Working Temperature: 0°~50°C Relative Humidity: <80% Storage Temperature: -10~50°C Relative Humidity: 0~70% Power: 1 * 9V 6F22 Battery(excluded) Size: Approx.12.5*6*3cm/4.9*2.4*1.2in Package Weight: Approx.164g/5.8oz Package List: 1 * Radiation Tester Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List