Feature: 1. Simple operation and highly sensitive. 2. Can detect the power of electromagnetic radiation around home electronics, electric wire, industrial equipment and so on. 3. Wide range of detectable frequency. 4. Data hold function. 5. Detects EMF radiation, works great for home projects like fixing wall outlets 6. Reads radiation being emitted from appliances, printers, copiers, smart meters and more 7. Great for the hobbyist or professional ghost hunter or paranormal investigator 8. Works as a detector of Electrical Field Radiation | Frequency range: 50Hz~2000MHz 9. Measurement time intervals: 0.4 seconds; Data hold button allows user to freeze a mesurement 10. ★ Simple operation and highly sensitive. For detecting home electronics: cellphone, PC, TV set, copy machine, fax machine, microwaves, refrigerator and so on. 11. ★ detect the power of electromagnetic radiation around home electronics, electric wire, industrial equipment and so on. 12. ★ Wide range of detectable frequency. 13. ★ Data hold function. Display readings: Three semi-liquid crystal display, maximum reading 1999 14. ★ Detects EMF radiation, works great for home projects like fixing wall outlets Specification: Features: Simple operation and highly sensitive. Can detect the power of electromagnetic radiation around home electronics, electric wire, industrial equipment and so on. Wide range of detectable frequency. Data hold function. Applications: For detecting environmental electromagnetic radiation: indoors, computer station room, industrial control room, electric wire, high voltage wire, monitors, etc. For detecting home electronics: cellphone, PC, TV set, copy machine, fax machine, microwaves, refrigerator and so on. NOTES: The dosimeter is for testing the electric field radiation. If the test equipment earthing shielded, the test would fail. Metal will shield the radiation, too. If the meter keeps display "0" while testing, please change a battery and test again. Specifications: Display readings: Three semi-liquid crystal display, maximum reading 1999 Housing: ABS Power 1 * 6F22 9V Battery (not included) Frequency Range: 50Hz~2000MHz Reacting time: 0.4S Color: Black Item dimension: 13.5 * 7.1 * 3.2cm/ 5.3 * 2.8 * 1.3in Item weight: 104g/ 3.66oz Package dimension: 16.5 * 11.3 * 4.6cm/ 6.5 * 4.4 * 1.8in Package weight: 110g/3.88oz Package list: 1 * Electromagnetic Radiation Detector 1 * Instructions Package List: 1 * Electromagnetic Radiation Detector 1 * Instructions