FNIRSI ERD-10 4-in-1 EMF Meter — Electric, Magnetic & RF Field Detector

A handheld 4-in-1 meter that measures electric fields, magnetic fields, RF power density and temperature — the FNIRSI ERD-10 shows live readings on a 2.4-inch color screen. Use it to survey a home, office, vehicle or outdoor space and see where field levels are higher or lower. It measures; it doesn't block or reduce anything.

Details

• Magnetic field: 0.01–99.99 μT in 0.01 μT steps; alarm at 0.4 μT
• Electric field: 1–1999 V/m in 1 V/m steps; alarm at 40 V/m
• RF power density: 0.2–1000 mW/cm², as listed by the manufacturer
• Also shows: ambient temperature
• Screen: 2.4 in color display with adjustable backlight
• Power: 1000 mAh battery, USB-C charging (5 V/1 A); auto-off after 5, 10 or 15 minutes, or off
• Size and weight: about 143 × 68 × 29 mm (5.6 × 2.7 × 1.1 in), about 143 g (5 oz)
• In the box: ERD-10 meter, USB-C cable, user manual. The "ERD-10 and BAG" option adds a carry bag.

How to Check It Works

Switch it on away from electronics and note the readings. Then hold it a few inches from a running hair dryer: the magnetic-field number should climb, and fall again as you step back. For RF, hold it near your phone during a call or close to a Wi-Fi router.

Honest Notes

• This is a measuring instrument, not a shielding product. It doesn't block or reduce EMF.
• The alarm levels are built into the meter; they aren't regulatory limits.
• Readings shift with distance, angle and the source, so use it to compare spots rather than as a lab measurement. It's for general awareness, not medical assessment.

Free standard shipping within the US.