Feature:1. High Sensitivity: Electromagnetic radiation tester's electric field and magnetic field radiation frequency range is 50Hz2000MHz, with high sensitivity.2. Multi Purpose: EMF tester can be used to measure the electromagnetic radiation of household appliances such as computers, mobile phones, TVs, fans, lamps, alarm clocks, refrigerators, etc.3. Small Portable: This electromagnetic radiation detector has a compact structure and a digital LCD screen that can display three and a half digits, which is very convenient for handheld use.4. Accurate Measurement: Handheld radiation tester is suitable for most radiation product measurement effects, demonstrations, etc., accurate and safe to use.5. Hand Held Design: The electromagnetic radiation detector adopts a hand held design, which is easy to use, not easy to fatigue after long term use, and can also test the radiation of alternating current.Specification:Item Type: Electromagnetic Radiation TesterMaterial: ABSColour: BlackScope of Application:For TVs, Fans, Lamps, Air Conditioners, Alarm Clocks, Refrigerators and Other Household AppliancesBandwidth: 50Hz-2000MHzSampling Time: About 0.4SBuilt in Battery: Li ion Battery Model: 6F22 (not Included).Package List:1 x Electromagnetic Radiation Tester1 x User ManualNote:Ships without battery.