Will this detect if there is radiation in seafood that's in it's package, like in the supermarket or if seafood in a restaurant is safe to eat?

Yes-If you menu dive on this 500+ there is a “food testing” setting that will allow one to test food for beta or gamma. I’ve personally not used that feature. This has 2 Geiger Muller tubes, on for low frequency, (for simplicity, under 100cpm will take over. There are people out there who know much more than I regarding the accuracy of this particular device reading super low level radiation. But, if you set this one to its slowest count, 60second readings, it says after 1minute of reading the item or piece of food that it’s accurate to +/-5% accuracy.

Will this detect radiation from a smart house? Phones, lights. Doorbells, routers.smoke detectors etc.

No. It detects nuclear radiation not electromagnetic frequencies. Specifically beta, gamma and X-ray emissions. The 600 will detect alpha, beta, gamma and X-ray.

Is there an android version of the app ?

Cellphones won't work in a nuclear apocalypse

Does it have GPS inside?

No. Only GMC-510, GMC-520 has GPS feature.

Gq Gmc 500plus Geiger Counter Nuclear Radiation Detector Monitor Dosimeter

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Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

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Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🌍 Stay ahead of radiation risks with real-time global monitoring!

ENDLESS DATA STORAGE - Built-in flash memory with unlimited online history on Geiger Counter World Map
READY OUT OF THE BOX - Pre-calibrated and fully equipped—just place and monitor instantly
USER CENTRIC DISPLAY - Large, auto-rotating LCD with clear fonts for effortless real-time reading
GLOBAL DATA CONNECTIVITY - Automatic server logging and worldwide data submission every minute
NEXT LEVEL RADIATION DETECTION - Dual Geiger tubes with independent calibration for unmatched accuracy

The GQ GMC-500Plus is a cutting-edge Geiger counter featuring dual sensors and a 10x extended detection range. It offers a large, auto-rotating LCD display, rechargeable battery, and built-in flash memory with unlimited cloud data logging. Designed for professionals needing precise, real-time radiation monitoring anywhere worldwide, it supports automatic data submission to global servers and requires no setup—just power on and start measuring.

Specifications

ASIN	B071JWB7TJ
Batteries	1 Lithium Metal batteries required. (included)
Best Sellers Rank	#116,986 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #19 in Lab Radiation Protection Supplies
Date First Available	June 7, 2017
Item Weight	1.76 ounces
Item model number	GMC-500Plus
Manufacturer	GQ Electronics
Product Dimensions	5 x 3 x 1 inches

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