Add to favorites
EMF Meter EMF Detector GQ EMF-390 Tri-Field Electromagnetic Radiation Detector 3-in-1 RF meter 5G Cell Tower Wifi 10G & Data Log 2.5G Spectrum Analyzer Radio Frequency Detector Ghost Hunting Equipment — Open-Box, 15% Off
Brand: GQ
Condition: Used - VeryGood
$10208
$11980
-15% Save $1772
Updated: 4 days ago
Description
Multiple high sensitivity sensors installed for detecting Power line, Smart meter, Cell phone, Microwave etc.
Identify/recognize the common possible sources, such as Power line, Cell Tower, Microwave, Static etc.
Safety suggestion lets you understand current situation instantly.
Detects 2G,3G,4G and low-band 5G cell tower signal level and RF radiation up to 10Ghz
Built-in RF Spectrum analyzer and GQ RF Browser for real time RF monitoring.
The GQ EMF-390 advanced multi-function digital EMF ELF meter is designed and developed by GQ Electronics, Seattle, USA.
It can be used RF signal detection, wireless camera detection, hidden wifi camera signal detection, GSM cell phone signal detection, audio bug detection, GPS tracker detection. The device integrated features include three axis Electromagnetic Fields, Electric Field, Radio Frequency and Radio Spectrum Power Analyzer.
The meter is able to identify/recognize the common source from EMF/RF measured, such as Power Line, WiFi/Cell phone, Cell tower, Microwave etc. It also comes with built-in audible and visual alarm.
It can be used for EMF, ELF, EF, RF detection and monitoring both indoor and outdoor, as well as in other similar environments.
EMF-390 has data logger feature. The unit can log/save detected signal into internal flash memory every second. User is able to download it later to do the analysis.
It can continually monitor the radiation while it is connected with a USB port as power supply. When the device is connected to a PC, PC software can download the radiation data to the computer and the user is able to analyze those data later.
The device also has a high contrast black/white LCD module and one front LED indicator. The unique GQ RF Browser feature visualizes the RF radiation precisely on screen. With RF Browser, user is able to see high speed RF signal, cell phone transmission, estimated Digital RF transmission data in bytes and RF power spectral histogram. The meter has installed multiple sensors to ensure maximum scale/range measurement and highest accuracy.
With open communication protocol, user is able to send commands to the unit to get all data remotely. This let the device be easier to integrate to any other system,
The device is equipped with a USB port, utilized for communication and external power supply/charging of internal rechargeable battery.
It can be used RF signal detection, wireless camera detection, hidden wifi camera signal detection, GSM cell phone signal detection, audio bug detection, GPS tracker detection. The device integrated features include three axis Electromagnetic Fields, Electric Field, Radio Frequency and Radio Spectrum Power Analyzer.
The meter is able to identify/recognize the common source from EMF/RF measured, such as Power Line, WiFi/Cell phone, Cell tower, Microwave etc. It also comes with built-in audible and visual alarm.
It can be used for EMF, ELF, EF, RF detection and monitoring both indoor and outdoor, as well as in other similar environments.
EMF-390 has data logger feature. The unit can log/save detected signal into internal flash memory every second. User is able to download it later to do the analysis.
It can continually monitor the radiation while it is connected with a USB port as power supply. When the device is connected to a PC, PC software can download the radiation data to the computer and the user is able to analyze those data later.
The device also has a high contrast black/white LCD module and one front LED indicator. The unique GQ RF Browser feature visualizes the RF radiation precisely on screen. With RF Browser, user is able to see high speed RF signal, cell phone transmission, estimated Digital RF transmission data in bytes and RF power spectral histogram. The meter has installed multiple sensors to ensure maximum scale/range measurement and highest accuracy.
With open communication protocol, user is able to send commands to the unit to get all data remotely. This let the device be easier to integrate to any other system,
The device is equipped with a USB port, utilized for communication and external power supply/charging of internal rechargeable battery.
Sold by
Amazon Warehouse
Official Amazon outlet for open-box & returned items
- Backed by Amazon's A-to-Z Guarantee
- 30-day return policy
- Ships from Amazon fulfillment centers
- Price verified on Amazon
Product Details
- SKU:
- awhd-us-b07kn36wr4
- Model:
- EMF-390
- Country:
- US
- ASIN:
- B07KN36WR4
- UPC:
- 723794245302
Shopping Smarter
Common questions about buying open-box and refurbished.
Why buy refurbished or open-box?
Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $18 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.
What's the difference between open-box and refurbished?
Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.
Why use OpenBoxFox?
Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for GQ products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.
Is it safe to buy refurbished?
Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.
