Functionality: 1. High Sensitivity: The radiation frequency range of electric field and magnetic field of electromagnetic radiation tester is 50Hz-2000MHz, with high sensitivity. 2. Multi-purpose: The EMF tester can be used to measure electromagnetic radiation from household appliances such as computers, cell phones, televisions, 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 portable use. 4. Accurate measurement: The portable 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 operate, not easy to fatigue after long-term use, and can also test AC current radiation. How to use: Start to use Specification: Item Type: Electromagnetic Radiation Tester Material: ABS Color : Black Scope of application: for televisions, fans, lamps, air conditioners, alarm clocks, refrigerators and other household appliances Bandwidth: 50 Hz to 2 000 MHz Sampling time: approx. 0.4s Built-in battery: Li-ion battery model: 6F22 High sensitivity: the range of Radiation frequencies of the electric field and magnetic field of the electromagnetic radiation tester is 50Hz-2000MHz, with high sensitivity. Multi-purpose: The EMF tester can be used for r measure electromagnetic radiation from household appliances such as computers, cell phones, televisions, fans, lamps, alarm clocks, refrigerators, etc. Small portable: This electromagnetic radiation detector has a compact structure and a digital LCD screen which can display three and a half digits, which is very convenient for portable use. Precise measurement: The portable radiation tester is suitable for most radiation measurement effects. radiation products, demonstrations, etc., accurate and safe to use. Handheld design: The electromagnetic radiation detector adopts a handheld design, easy to operate, not easy to fatigue after long-term use, and can also test alternating current radiation.