What is the max read range for passive RFID? It says 10cm but I get the impression it's far less.
1812437
Max read range depends on numerous factors including the following:Size and shape of transceiving antennaSize and shape of transponding antennaPowerTechniqueThe maximum allowed for NFC applications is 10cm.I have not had very good luck with this reader or the company supporting it (tried to contact them many times, but never received any response).
1812438
I usually get a little less than an inch before it reads whatever your scanning
1812439
I have yet to get it to work with my mac so I can't really answer this question.
2189919
There is, of course a distance limit, but wireless mice which use an RF signal like the Microsoft are not impeded by a desk or wall, but signal is weakened through such objects, that is, line of sight increases the range I can use mine up to 15 to 20 feet from the computer, and the receiving unit is plugged in, out of sight, into the rear of my computer.
1466232
The only way to know, is to try a specific RFI reader. Then you know it will protect from that reader. With this product, I've asked immigration to try reading my passport before it was out of the sleeve. They couldn't. And I asked my bank to try reading my smart chip equipped bank card with theirs. They couldn't. Regular credit/ATM cards are not RFI, they are magnetic. Try running it through a reader at Walmart while in the sleeve. it won't work.
1763485
There are too many factors for anyone to give you a good answer regarding a possible increased range. For example; Is there a device nearby that may be degrading wireless signals in general? Poor electrical connections, a fridge capacitor failing, etc all can create problems.
106796
NFC is - by design - short distance. Though it can read "RFID" if you want long range try "active RFID" or "medium range RFID" or "long range RFID"
586820
Designed to work without internet (has a clunky internet connection mode that works poorly). I am using at 10 meters from camera to monitor with excellent reception (and many walls between). Listed range indicates 30m (have not tested this myself though).
688252
Not sure about a max range. But it has problems after a few feet. But take into consideration I'm using it at work and there could be interference from the machinery.
1683756
I don't know the exact range. However, many other factors contribute to range operability i.e walls, metal, microwaves etc. I operate mine between several walls and approx.100 ft away so you should be o.k. (It is radio waves so "line if sight" is always best........
1031612
This is a very weak receiver, probably only useful for door locks and other really close proximity. I adjusted the gain on this in software and was only to get maybe 1-1.5 inch range. It's good for prototyping software and getting a grasp of how RFID works, but for a fence you likely want a much much larger antenna --- RFID probably isn't the technology you'd want for this application.
678896
The device does not specify the exact range but these are really only designed to transmit within a few feet. I would say 10-15' may be the maximum. I typically use it in the car sitting in a cup holder (4-6' from the radio antenna) and it works great.
1708248
This product uses 27 MHz wireless which has a maximum practical range of about 6 feet. I wish they made this point a lot more clear! You'd be better off getting 2.4GHz technology which should increase the range.
592343
I have the devises with 10 meters distance, but from second to first floor and with walls in the way. Because of that, the signal is not perfect and at the begining I had to keep fixing the receivers anthena. If the signal is within the same floor, and/or no or few walls in the way, there should be no problem. 10 meters are about 35-40 feet. There is no need of line of sight. It should work OK because in my case I almost have the devises one over the other in different floors, with stairs and 2 half walls in the way. Finally, if you buy it, the package instrutions do not include the detail of how to sincronize the devices, just have to press the top of the UFO looking thing. I have the devises with 10 meters distance, but from second to first floor and with walls in the way. Because of that, the signal is not perfect and at the begining I had to keep fixing the receivers anthena. If the signal is within the same floor, and/or no or few walls in the way, there should be no problem. 10 meters are about 35-40 feet. There is no need of line of sight. It should work OK because in my case I almost have the devises one over the other in different floors, with stairs and 2 half walls in the way. Finally, if you buy it, the package instrutions do not include the detail... » Read More I have the devises with 10 meters distance, but from second to first floor and with walls in the way. Because of that, the signal is not perfect and at the begining I had to keep fixing the receivers anthena. If the signal is within the same floor, and/or no or few walls in the way, there should be no problem. 10 meters are about 35-40 feet. There is no need of line of sight. It should work OK because in my case I almost have the devises one over the other in different floors, with stairs and 2 half walls in the way. Finally, if you buy it, the package instrutions do not include the detail of how to sincronize the devices, just have to press the top of the UFO looking thing. « Show Less
1561104
It is not RF-capable out of the box. Easily fixed by adding the 6160-RF keypad. This is what I run, and it works perfectly.
224251
According to their specs distance ranges up to 100 meters (329 feet)Here is the datasheet:http://www.addicore.com/2pcs-Addicore-nRF24L01-Wireless-Transceiver-p/112.htm
1270123
Reads @ 19.5 Mb/s. Have not performed write test. Mostly use it for RasPi OS. Works well enough for that. Hope this helps.
1031611
It's range is about a few centimeters, (about an inch). I don't think it would work well for a wireless fence solution. Keep in mind this is Near Field Communications so the ranges are inherently small because of the wavelength.
1978242
A standard 2.4 Ghz RF device has a range of 10 meters or about 33ft. This range can be affected by electrical interference or line of site loss, but those are issues you can account for during setup. To be comfortable I'd suggest being no more than 25' from the USB receiver.