Feature:1. MULTI FUNCTIONAL: 3 in 1 device efficiently detects electric field radiation, magnetic field radiation, and temperature simultaneously, bringing you maximum convenience.2. ACCURATE MEASUREMENT: Equipped with a built in electromagnetic radiation sensor, the device can process the data through a control microchip and display it on a clear LCD digital screen.3. PRACTICAL CONVENIENCE: Given that our living environment is surrounded by radiation from microwave ovens, electric fans, air conditioners, and more, this EMF meter can quickly measure radiation and temperature.4. EFFICIENCY AND VERSATILITY: As an all in one gadget, the tester is efficient and convenient to use, perfect for frequent and multi purpose applications.5. DIGITAL DISPLAY: With its clear and detailed LCD digital screen, the electromagnetic radiation tester gives an accurate visualization of radiation values, making it easy to track and monitor exposure levels.Specification:Item Type: Electromagnetic Radiation TesterMaterial: ABSBattery: AAA battery x 3 (Shipped without batteries)Range: Electric Field: 1V/m to 1999VMagnetic Field: 0.01T to 99.99Temperature: -10 to 70Test Bandwidth: 5MHZ to 3500MHZSampling Time: About 0.4 secondsTest Mode: Dual mode testOperating Temperature: 0 to 50.Package List:1 x Tester 1 x Manual