Technology Alternatives 7021 Cell Sensor EMF Detection Meter
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Tools and Hardware Reviews of Technology Alternatives 7021 Cell Sensor EMF Detection Meter
Customer Review: An easy to use device
Summary: 5 Stars
I recently received my Cellsensor and have been wandering around the house checking various readings and surprised at times what I found - like some fairly high reading near the microwave, even when it's not running. Fun to use and informative with a nice booklet explaining RF and ELF radiation and it's implications.Customer Review: Best Used for Measuring ELFs
Summary: 4 Stars
Couple things I noticed about this device. First, it measures both RF (radio frequency) and ELF (extremely low frequency) together, with no way to test each individually. Second, it is NOT designed to measure cellphone tower radiation and will not detect them, only the close RF radiation of a cellphone. It couldn't really pick up on my 2.3 GHz cordless phone emissions either when it was sounding the dial tone, maybe that frequency was too high. But it wasn't designed for that either. It's sensitive to regular cellphones frequencies though. I also realized after buying, that since cellphones have to meet emission standards, there is not much point for me to measure its RF output other than to confirm it meets those standards... well, other than to see whether those things you stick onto cellphones to lower their RF actually works. Those are my only gripes.
Now, onto the good points. If you follow the instructions, this thing will indeed give you a decent approximation of the radiated power output of a cellphone. So it's true to advertised claims. Where this device shines is as an ELF meter for measuring the vibrating magnetic fields around clock radios, power lines, computers, appliances, and home wiring. I tested the frequency response and it measures best ELF fields between 30Hz and 900Hz, sensitivity rolling off greatly outside that range. On the "high" sensitivity setting, it even registers sudden movements of the probe, which I think is the CellSensor cutting the flux lines of earth's magnetic field. So if you shake/wiggle the probe in a given space, you can get a very rough idea of whether there's a DC magnetic field there. Like if you wiggle it just a little above a magnet the meter will go off the charts. So when you do your ELF readings, be sure to keep the probe still if you want to measure just the ELF fields of things nearby, otherwise you'll get a false reading generated by stationary magnetic fields.
So in summary, this was worth buying, but mainly only to measure nearfield cellphone emissions and ELFs from current-carrying devices. It won't work for detecting cell tower radiation, finding wifi hotspots, measuring wifi output, and it won't detect the strength of static magnetic fields unless you get creative and wiggle the probe. For those applications, I recommend a proper RF Signal Detector good for 50MHz to 6Ghz ( Professional Wireless RF Signal Bug Detector ), and for static magnetic fields look for a DC Gauss Meter.
I haven't tried to detect ghosts with it, but it probably also ought to detect EM disturbances caused by alien ships hovering over the house, haha.
Customer Review: Best low priced EMF Meter.
Summary: 5 Stars
Highly recommended EMF Meter. Simple to use and works great at recognizing problem spots. Microwaves give off EMF's even when off, it's a good thing to stay 5 feet away from them. I was able to fix an EMF source around my computer. The EMF's were coming from the wires near my feet. So I plugged a power adapter further away on another plug and that fixed that problem. I would have never known about that EMF problem.
I like the way this unit beeps and flashes a light when the EMF is too high. The power button looks very sturdy, the unit is light weight but this is a good thing. If you need an EMF meter that is easy to use and low priced, I say buy this one.
Customer Review: CellSensor EMF detector is vs Trifield 100 XE (winner!)
Summary: 1 Stars
Update:
This is a Great meter if you want to be fooled into thinking you are EMF free-
It doesn't pick accurately up Many sources (or Not at all!)- Cell Phones, cordless 900mhz... phones, computers...!
I read other negative reviews & bought the MUCH more sensitive Trifield 100 XE- Boy was I in for a shock (Ignorance is bliss!?)!
Trifield 100XE EMF Meter
I wanted an inexpensive/ HIGHLY SENSITIVE EMF detector, and this is it!
It is more sensitive on than other detectors costing $3x (.1)!
This unit is well made (sorry that the 1 negative reviewer was probably bummed out at not finding a ghost...!), and 3.5' cord makes scanning EASY!
Sturdy enough for a contractor..., with TLC!
The other positive reviewers pretty well covered the features...
I'll post some of MY test results-
Best on High, and results WILL vary by brand...!-
- Found 1 improperly grounded 120v outlet= 4' before, and 2" after fixed.
- House fuse panel was VERY HOT!= 6'+, and I'm glad it's WAY out in the garage! Walls don't stop EMF's!
- Outlets/light switches= 2" before use, and all outlets on circuit are 3' if in use (outlets after used are 2")!
- Microwave oven (vary by brand...)= 6'
- Cell phone (I use mine infrequently )= 2" (HOT) at speaker "FRONT" ONLY! Same on or off, and I'll carry mine facing OUT (Experts say to limit calls to 10min, no kids (thin skulls/ growing brains...!)! Wish mine had a speaker phone!
HMMM?- Tony Snow, and Ted Kennedy both died of brain cancer/tumors!? Wonder which side of their head?
- ALL digital clocks- Large face= 3', and small = 1' !
- Desktop computer tower= 2' (low), and flat panel monitor= 6".
- Laptop computer= Very low, but modem/router was 2'!
- My Older 900mhz cordless phones/base station= Zero, on or off! :o)
2.4ghz+ cordless phones are supposedly VERY HOT(same frequency as microwave oven!)!
- TV's- Older tube type= 4', and 46" flat panel LCD/digital= 1'.
- Light bulbs- Filament= 6", and Fluorescent= 1".
It is a relief knowing..., and kinda fun!
Buy one & see (no, I don't own stock... in the company)!
Scott :o)
Customer Review: Cellsensor
Summary: 4 Stars
This product works very well. It is very easy to use, and performs as the manufacturers say it will. The readings you will get will make you think, as the meter will sometimes go berserk near certain objects. It is very compact, and portable, as well as easy to operate and to read. I got very interesting results around appliances, fuse boxes, circuit breakers, televisions, computers, light fixtures, and power lines. I was very impressed with this product.