Does this unit detect and mesure the radiation from a smoke detector?

The GM tube of the GMC-600 Plus is a pancake one with a thin Mica Window. This allows also Alpha radiation to enter the GM tube and to detect it. A smoke detector can work with Am-241 isotopes and uses Alpha radiation for smoke detection. But all detetctors I know are very well shielded, so no Alpha radiation weill leave the smoke detector. Therefore, no external radiation detector will be able to detect the internal Alpha radiation of Am-241! Regards Uwe Z.

Is it possible to end up buying a returned unit that was used and exposed to contaminated dust or materials? On amazon, you end up with returned items

Even though the seller responded to this question saying they will never themselves sell used products as new, that is probably the truth. Amazon itself, on the other hand, does resell used products as "new" products. When a product is returned to an Amazon warehouse, they will attempt to sell that product to the next customer as a brand new product even though it is a used product rather than trying to RMA the item. Given that this product is likely to be used around a variety of hazardous radioactive sources, Amazon's current policy of reselling used products as new products is a huge problem. This seller really should just sell direct online (via Square, Stripe, etc.) rather than through Amazon's tainted supply chain. Or come up with a tamper-evident mechanism (e.g. tamper evident bank deposit bags) that customers can use to confirm that they did indeed receive a genuine, untouched, brand new product and also tell customers how to confirm for themselves that they indeed received a brand new product.

will it detect radiation in water?

If your looking to "see" the radon particles in the water probably won't notice much difference between the water and background radiation unless it was a significant amount... I would recommend putting the water in a glass or beaker and set the monitor on top to make readings... I may try that myself and see what results are if any..

How far should I let the battery run down before recharging?

20% would be the max if used on a regular basis. Same rules as a cell phone, both li-po batteries. Charge at 20% or more, try not to go below that 20 unless the situation is critical. If used rarely, then charge when it gets at 50% and that's because if and when you really need it and it's dead, well it's dead and useless at that moment. Hope this helps.

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🌍 Stay ahead of invisible threats with real-time radiation insights!

READY TO GO POWER - Rechargeable battery keeps you powered for extended fieldwork without interruptions.
DATA LOGGING MASTERY - Unlimited cloud storage plus onboard flash memory ensures no data point is ever lost.
USER FRIENDLY DISPLAY - Large auto-rotating LCD with bold fonts for effortless reading in any environment.
NEXT GEN RADIATION DETECTION - High-sensitivity Pancake Geiger tube detects alpha, beta, gamma & x-ray radiation with precision.
SEAMLESS GLOBAL CONNECTIVITY - Built-in Wi-Fi lets you monitor radiation data anywhere, anytime via live server updates.

The GQ GMC-600 Plus is a cutting-edge digital Geiger counter featuring a high-sensitivity Pancake Geiger tube (lnd 7317) capable of detecting alpha, beta, gamma, and x-ray radiation. It boasts a large auto-rotating LCD display, advanced onboard CPU, built-in Wi-Fi for real-time global data logging, unlimited server storage, and rechargeable battery power—making it the ultimate tool for professional radiation monitoring in diverse environments.

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Manufacturer	GQ
Part number	GMC-600 plus
Item Weight	45 g
Product Dimensions	12.95 x 7.87 x 4.06 cm; 45 g
Batteries	1 AA batteries required.
Is Discontinued By Manufacturer	No
Batteries Included	No
Batteries Required?	No
Item Dimensions LxWxH	13 x 7.9 x 4.1 cm

GQ GMC-600 Plus Counter Detector Dosimeter Alpha Beta Gamma Ray

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