Does it detect ultrasonic sound frequencies? Like the mosquito alarm?

No, only EMF / RF, electro magnetic spectrum not sound waves

Will this equipment detect electricity pylons for say up to 1 mile ? (i want to know before I purchase a new house)

It really depends on the strength of the electromagnetic field being generated. An electromagnetic field decreases exponentially over distance, as a result I would suggest that a pylon carrying 400KV a mile away would be undetectable over the earths natural magnet field. This device is capable of detecting emissions from TV's, computers and other electrical systems within the home. So in short the answer is no. If the pylon your concerned about is about a mile away I'm sure it would have no detrimental affect whatsoever.

Can this device function as a Geiger counter in the event of a nuclear incident please?

No, definitely not. It measures electromagnetic radiation up to 10GHz, not nuclear radiation. It is mainly useful for detecting dangerous levels of non-ionising radiation from mobile phones, smart devices in general and. Microwave cookers etc. They do a Geiger counter version that does detect nuclear radiation. It detects beta and gamma radiation that would be emitted by a nuclear explosion but not alpha particles resulting from breathing in radioactive dust. However, beta and gamma radiation detection is generally the best indication of a nuclear event.

What is the maximum time period of data that can be recorded on onboard flash memory and transfered to PC?

It is about 24Hrs for every seconds data.

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EMF Meter, Advanced GQ EMF-390 Multi-Field Electromagnetic Radiation Detector 3-in-1 EMF ELF Meter & RF Spectrum Analyzer, Cell Tower Smartmeter Signal Detector RF up to 10G Data Logger

Product ID: 93934272

Details

Brand
GQ
Colour
Gray
Item weight
10 Ounces
Maximum range
10 Metres
Power source
Corded

📊Built-in real-time RF spectrum analyzer

📡RF detection up to 10 GHz

🔋Long-lasting lithium & alkaline battery support

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Description

📡 Stay ahead of invisible threats — measure, monitor, and master your space!

COMPACT PORTABLE - Lightweight, wall-mountable design fits seamlessly into any home or office setup
DATA DRIVEN DECISIONS - Integrated RF Browser and data logger for tracking and analyzing your environment over time
PRO LEVEL SENSITIVITY - High-sensitivity sensors identify power lines, smart meters, cell towers & microwaves instantly
INSTANT SAFETY INSIGHTS - Real-time safety suggestions empower you to reduce invisible radiation exposure effectively
TRIPLE THREAT DETECTION - 3-in-1 EMF, ELF, and RF meter for comprehensive radiation monitoring

The GQ EMF-390 is a professional-grade 3-in-1 electromagnetic radiation detector combining EMF, ELF, and RF measurement capabilities. It features high-sensitivity sensors capable of detecting frequencies up to 10 GHz, a built-in RF spectrum analyzer with real-time monitoring, and a data logger for tracking exposure trends. Designed for home and office use, it offers instant safety suggestions to help users minimize harmful radiation from common sources like power lines, smart meters, and cell towers. Compact and battery-powered, it’s a trusted tool for health-conscious professionals seeking precise environmental insights.

Specifications

ASIN	B07JGJ897T
Antenna Location	Electromagnetic Field and Radio Frequency Detection, Security, Automation
Battery Description	Lithium (9v, lithium_ion) and alkaline (lr44)
Best Sellers Rank	29,145 in DIY & Tools ( See Top 100 in DIY & Tools ) 1 in Spectrum Analysers 252 in Scanners & Testers
Brand	GQ
Colour	Gray
Compatible Devices	Computer, Smart Home System
Country of Origin	USA
Customer Reviews	4.5 4.5 out of 5 stars (3,181)
Frequency	10 GHz
Item Dimensions D x W x H	2.5D x 7.6W x 14H centimetres
Item Weight	10 Ounces
Manufacturer	GQ Electronics LLC
Maximum Range	10 Metres
Model Number	EMF-390
Mounting Type	Wall Mount
Number of Batteries	1 LR44 batteries required.
Operating Temperature	5 Degrees Celsius
Part Number	EMF-390
Power source	Corded Electric
Temperature Range	5 Degrees Celsius
UPC	723794245272 723794245364

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44828 kr

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Buyer Protection · Full refund if your order doesn't arrive as described.

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TrustScore 4.5 | 7,300+ reviews

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