Cheap dependable communication
351107
Having had experience with some commercial RS 2-ways in the 90s, I like these a lot.  The Radio Shack units cost several hundred dollars and worked no better than than these.  I have no complaints, they seem to have adequate range, and if the airwaves are busy, the security code will suppress all the other traffic.
Good product
3945854
worked just like ad said.inexpensive way to have home phone service.teenagers won't lose this phone and cause breach of contract.
3197225
This card works fine and is the cheapest way to get AirVoice service which starts at $10/month for 250 minutes of talk (or 500 texts or even 150 MB of data @ 6.7/MB) and unused funds roll over. Obviously data is for limited emergency use as it will quickly wipe out your minutes. I needed a micro SIM card, which this isn't, but I cut it to size. For those without a micro SIM to compare or a template, the more expensive precut version might be better. For talkative folks, the unlimited voice and text plans start at $30 and I personally wouldn't buy a more expensive plan because of AirVoice policy of requiring users to claim the second half of their data, but the card will work for all.
3293937
I use these as cheap access points to extend my wireless network.
337442
reliable, cheap and easy to use. Going strong for a few months now. Very happy with the kit, ease of setup and the great instructions that were included.
1372294
It is a great deal, it's cheap and works just great for online chat. It has just the smallest bit of static, but besides that i think it's well worth it.
2918254
This item with the receiver is a low cost solution to switching issues. Haven't had any issues with them. Easy to set up and use.
3150270
It is cheap and "works". We have to unplug and restart it about once a week. Not sure if that is this fault, the modem or our service.
4298906
The trendnet 56K USB 2.0 modem is fast and reliable and installs easily. Not a lot of my clients have dial-up applications and good modems are getting harder to find.

The reason this was purchased was to replace a Zoom Telephonics modem which had been having occasional problems and finally had a failure mode of constant bit dropping. This unit is about 1/5th the size of the zoom unit. It is powered by the USB cable and the driver is an easy install. The modem is compatible with the typical AT commands and worked perfectly shortly after the driver was installed, it was plugged-in and autoconfigured by windows XP.

Issues seen with the previous modem were gone and reliable data transfers were established with the other end of the connection (a dedicated time accounting station).

If you need a simple dial-up modem this one has been good for us for about a week so far. You migth want to consider getting a power strip that has surge protection for the modem line. This may have caused the problems with the previous modem.
3336717
This was a cheap solution to upgrade the house to gigabit, but I did have to restart the unit once so it gets a ding on the rating.  It was replaced by a Cisco SG100 and that has been very reliable.  Go for the Cisco if you can put up the extra money.
1828578
Works perfectly for receiving info on subject without them hearing, and becoming alarmed. Our company uses zello and this works pretty well with it. The PTT button also works really well when speaking with dispatch.
3148892
This is not a high end device, but works just as well as some of the more expensive ones. It works reliably and has extremely low power usage. All of the usual features are present (MAC filtering, port forwarding, etc.) Has modern security features including WPA2. The best feature is the option to control the signal strength, which is useful if you don't intend on using devices from a long distance.
83432
No frills, but works well.  Sure, there are tools that cost 100 times as much that will give you information on throughput and EM interference, but this little device will work for 99.9% of troubleshooting situations. A must-have.
3678824
This router was pretty easy to set up, and has worked reliably for me so far in the couple months I've had it.
2770801
fulfills its function, it was correct sending
1459863
Its not the latest and greatest technology, but if you get a good price on it go for it. Have had this for several months with no complaints. Consistently get over 10MB/sec with both direct connection and wifi. Nothing fancy, but its a solid connection for under $50.
1046527
cheap and extremely useful. what else do you need?