GQ EMF-390 vs Smart Sensor AR824 — Which Should You Buy?

Side-by-side comparison of GQ EMF-390 and Smart Sensor AR824. We compare specs, performance, and value to help you decide.

Updated 2026-03-09 Independently reviewed
GQ EMF-390

GQ EMF-390

9/10
$120 /one-time
VS
Smart Sensor AR824

Smart Sensor AR824

7.4/10
$35 /one-time

Feature Comparison

Feature GQ EMF-390 Smart Sensor AR824
Field Types RF, Magnetic, Electric RF, Magnetic, Electric
RF Range 10 MHz – 10 GHz 50 MHz – 3.5 GHz
Data Logging Yes
Spectrum Graph Real-time
Display LCD
Battery Rechargeable
Weight 220g 120g
Size Pocket
Auto-ranging Yes
Data Hold Yes

GQ EMF-390

Pros

  • Data logging
  • RF spectrum graphs
  • 10 MHz–10 GHz range
  • Rechargeable
  • Multi-field
  • Great value
  • LCD display

Cons

  • More complex interface
  • Bulkier than TF2

Smart Sensor AR824

Pros

  • Pocket-sized
  • 3-in-1
  • Auto-ranging
  • Data hold
  • Portable
  • Low price
  • Simple

Cons

  • Small display
  • Basic accuracy
  • Limited range

Our Verdict

GQ EMF-390

Best value EMF meter. Logging and spectrum analysis at a fraction of professional meter cost.

Price Drop Alert — View Deal Now

Smart Sensor AR824

Best pocket meter. Toss it in your bag for quick EMF checks anywhere.

Limited Offer — Check Today's Price

Our Methodology

We test each meter against known sources and compare accuracy. No manufacturer has editorial influence.

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