EcoVisor F4 Geiger Counter Radiation Detector Dosimeter Nitrate Tester EMF Electromagnetic Electric Magnetic Field Device Water Quality TDS Meter Portable Electronic Touch Screen Easy to Use

I will start by saying that this is a great, compact piece of tech. Along with the functionality of the geiger counter, you have an EMF meter, a feature to measure water hardness, and a feature to measure the level of nitrates in a variety of different foods; those being fruits, vegetables, and meats (including fish).I have read complaints about the battery life being short, and thus far I have not noticed that, but as with anything that could be subject to change. I power mine off by holding the "OK" button when I'm not using it to conserve battery life. One thing I did notice, however, is that the clock does not stay current; for instance, say that I set it for 9:30 at 9:30 in the morning, and I turn the unit back on at 2:15 pm. The clock will say something like 11:20. This is my only criticism of the product, and I do not believe this to be worthy of a drop to four stars since this is a trivial feature.All in all, I would absolutely recommend this unit. If you're on the fence, I say go for it! If it doesn't work for you, you can always return it.

I was skeptical but this product is wonderful. We’ve found multiple hot spots in the house and now we can make adjustments. Great product and truly works.

I cannot attest on the accuracy of this unit but it was working reasonably well until put in storage for a while. After pulling out of the shelf it was turning on but only working for about a minute and then shut itself off. I fully charged it but that didn't help. Battery apparently are not made to be replaced as it is quite hard to disassemble the unit. But after taking back cover I realized it's just a pair of AAA rechargeable. I just plugged in regular Batts and it is working fine. I still have yet to hear from customer service. Price is quite steep for the product imo, there are better options around

I actually have no idea if this thing ever gave me proper readings because Im no expert, but I gave it 4 stars because the battery died after a year. Thankfully you can plug it up with an external usb battery pack for phones and keep it going.

I love mine. I have carried it for years now. I have since put velcro on the back and keep it on the dash of my truck facing me. Only 2 minor complaints. The rechargeable battery discharges quickly, so I keep it plugged in the charging port. Also the test probe cap on it easily falls off and it is a necessary part. There is a small switch that detects when the cap is removed and automatically switches to the nitrate tester. So do not lose the cap.

I wanted to use this to test for fertilizer nitrates in ‘organic’ vegetables before buying them. They do test well at home. Also wanted to check water safety as I travel. This unit only tests ph. I have found the electromagnetic feature very interesting. Radiation seems constant so far. If I were in a radiation situation this would do little good as it barely holds a charge. With any use at all the charge depletes. Even with no use. It takes a long time to recharge, even when not depleted. I keep this on a solar charger much of the time. It would be more useful if I could put it it my purse to carry around. I hope the flaws will be addressed as I use it (I like the small size) and would love to make more use of it.

I have had my device since 2018 I use it all the time especially for water. I suspected my daughters well water was contaminated and sure enough 285 with particle detection alone. I now use a water distiller for water because our RO system didn't seem to be the top of the line it was supposed to be, it's got a high reading of particulants distilling tells a lot about what is really in your water. I tried San Bernardino water, it was high but after distilling the water what was left smelled so bad. It was this awesome gadget that made me aware of just how much junk in our water and food.I wouldn't do without this for radiation, nitrates and particulants in food and water.An absolute must!

Ok, the problem I had was that there was no sound for radiation, no click or tick, it is just silent, and yes the sound settings were set to “on”. Defective unit and returned. Order new one from the official store “SOEKS USA” It cost more but for good reason, the firmware was current and it was not a refurbished or returned units, it was new, relatively speaking. The lates firmware updates were released over 4 years ago and the batteries are much older then that.0: Don’t be surprised, just buy new batteries before or while purchasing SOEKS! I recommend 2x AAA, Panasonic eneloop, 800 mAh. The included batteries are generic, they say 950 mAh but didn’t do that when they were new! A real set of 800 mAh AAA batteries will triple or quadruple your battery life.1: background radiation does fluctuate, several times a minute and that is a normal phenomenon.2: The unit is supposed to keep measuring background radiation even when you’re using the other functions. While using the other functions the rad levels will still be visible in the bottom right hand corner of the screen.3: newer firmware has more foods, languages and bug fixes (polish added)4. When measuring nitrates the food list is for applying proper offsets to account for a particular foods average moisture content and acidity levels. It shows you the foods known natural nitrate levels along with the actual levels measured. This unit compensates for temperature making nitrate testing much more accurate than other brands.5: TDS total dissolved solids is a helpful indication to not drink a water but should not be depended on to determine if water is safe to drink! Low levels of dissolved solids DOES NOT MEAN SAFE WATER!!! example: very low levels of arsenic or lead would be much worse for you than very high levels of calcium. And then there are biological organisms to consider.6: Do not insert probe into baby! even though it says to do so, see attached photo. I think they probably mean baby food or formula. lol.