Ok but not too useful for electrical debug and trouble shooting
345856
Of limited use if you are trouble shooting electrical. Not very accurate for a 2005 Honda Pilot. Needs to be more thorough and better pictures.
653869
First let me start of by saying that I have been using these types of testers for a long time now. I have owned one from various manufacturers such as Fluke, Greenfield and Craftsman. It must be understood that all of these units will detect voltage though the sensitivity from device manufacturer to others will vary. I would not use this particular device as a end all to indicate that something does not have power applied to it due to the inconsistency of its readings. If you will notice the device is actually designed to be inserted into the outlet slit for measurement. Problem  is that with safety outlets this cannot be done. Overall it is decent and should be used for generalized troubleshooting and not as device for checking to see if a device has been de-energized prior to performing serving......
834430
This Finder "finds" breakers even when the transmitter is shut off.  I suspect that the receiver responds to electrical noise easily and doesn't try to filter out the transmitter signa, in orderl to be reliable.  The fact that the detector is going off like crazy when the tranismitter is off just seems poor.  The sensitivity adjustment isn't much help.  They should have given the transmitter a more identifiable signal and then built the receiver to filter out noise looking for that signal.  I have ended up just turning off breakers one at a time, and not using this device.  Perhaps if there is someone out there with no modern electronics - perhaps an empty vacated house - this might be more useful, but it seems poorly designed.
360100
Handy dandy for when you need to test the amperage of 120v appliances or anything else that are under 15 amps. Troubleshooting is about 80% of what I do as a service electrician, and having one of these in your tool bag is extremely helpful in certain situations. In conjunction with the min/max function on a clamp multimeter, you can better determine whether its the appliance that's causing the problem without having to open any live panels and getting readings that way.
1757219
I don't like this detector as much as I had hoped to.  Although the sensitivity is adjustable, I have to turn the sensitivity almost all the way up to detect 115 v ac with the probe against a wire.

Maybe I just haven't worked with it enough to fully appreciate it yet, and I will keep using it.
3420877
It performs ok, although it takes a learning curve getting used to the strobe dial.  I found it too difficult to see from my pedal board, (I am over 60, so eyes ain't what they used to be!).

I was also disappointed to find there was no power plug, just battery.  Adding a 1 Spot power proved difficult as the only way to run the battery adapter is along the side where the pedal is pushed.  I fixed problem by taking my Dremmel and grinding a groove just big enough for wires to be unobstructed.

For the above reasons, I have elected to use this as my work bench tuner for guitar set up and have gone to the Ashdown Engineering tuner for my pedal board.
4599397
It worse just fine, but speaking as an electrical engineer, the instructions desperately need help. Let me know if you would like me to provide.
3394260
not competable with main board Dc voltage, although it was recommended for my toshiba laptop
100331
Power supply tester is okay--was able to identify a missing -5v on an unknown unit. The PC analyzer user's guide, however, appears to have been translated from Chinese to English by someone unfamiliar with English.  Haven't had a need to use network cable tester, but operation appears to be pretty straightforward.
1715248
I'm really surprised this has such high reviews. It is cheap and it does work but that's about it. The display face is very far set into the gauge. This means the gauge has to be right in front of you to read it. I previously had my gauges by my hvac controls but this gauge was usless there so I had to move it to my a-pillar. Now it is OK. The second problem i found is that there seems to be a loose connection in my gauge internally. Every 20-30 seconds power is cut and the gauge blinks. It's quite annoying. I've ruled it to be internal to the device after some testing with it.
145557
It is okay to use this for finding some issues.but some systems are not seen by this scanner. For ex EGR,EVAP and O2S
37469
Product: Cobra CPI-1575 1500 watt DC-to-AC Inverter
Rating: 3/5 (ok)

I bought this unit for emergency use during blackouts.  My setup is a sealed 55AH Marine Gel Battery with a carry strap, a 1500W inverter, and a trickle charger.  When a blackout occurs, the inverter allows me to tap the 55AH battery to run various hosehold necessities ... such as charging our cellphones, or adding an extra 7 hours of runtime to our entertainment center or our computer setup (both of which are on UPS backups good for 50-60 mins)

LIKES:
* This unit features a digital display showing the current draw on the battery, which (if you're handy with a calculator) you can use to estimate your runtime on the battery.

DISLIKES:
* The amazon product description and product packaging both fail to mention clearly that this unit DOES NOT INCLUDE CABLES, FUSE OR MOUNTING SCREWS, which necessitated a pair of trips on my part to a local automotive AND a welding supplies store, to obtain the missing items.  It was a frustrating surprise.

* This unit's "modified sine-wave" output may not be fully compatible with extremely sensitive electronics.  For example, when I tried to connect my computer's UPS, the UPS rejected the Cobra's power output, and stayed on it's own internal battery ... until I switched it's input sensitivity from high to low (after which it successfully switched over to drawing from the cobra).  Incidentally, according to my UPS, this unit was putting out 114V, not 110v.

* Chassis lacks protective cushioning.  The chassis is designed to be mounted permanently and look pretty, rather than being portable ... which is nice for some people, but not for others.

Bottom line: this unit seems to be adequate, as long as you don't mind doing some minor wiring.

-------------

TIP: I was able to improvise not one but two sets of cables for the inverter by sacrificing an old set of 6-gauge automotive jumper cables.  I cut 3' of cable from each end, left the clamps on one set, and switched to other set to a pair of crimp-on O-Connectors, and then for both sets I stripped 1/2" of the insulation off the free ends.  Technically, I should probably mount a 150A ANL breaker on both sets ... I'll get around to that eventually.
4711859
I haven't used it extensively, but so far the Hi-Tech HTP-6 Circuit Detective Circuit Breaker Finder seems to work pretty well.  It has two components, a signal transmitter and a receiver.  The two pronged transmitter is designed to be plugged into a standard 120 outlet.  The receiver is designed to scan the circuit breakers in an electrical panel or loadcenter, and indicate by an shrill audible signal and flashing green light, which circuit breaker is feeding the load.  Following the correct procedures, the system seems to produce fairly accurate though not flawless results.

For these types of tracers, electronic interference can make reading the signal difficult.  Certain types of power strips, adapters, and other add-on electrical attachments, can also mess up the transmission of the imparted signal.  So for various reason, the Hi-Tech tracer occasionally has some problems nailing down which circuit is the source.  I first used a similar tracing device by Pasar, perhaps twenty years ago, and the reliability issues that existed then, still seem to exist today.

The main thing that bothers me about this device is the power switch on receiver.  It is located on the side of the unit, and it just takes is a slight touch to turn the receiver on, and begin running the 9 volt battery down.  To turn the unit off, you hold down the switch for a few seconds, but a little tap and the receiver turns back on again.  Not too smart, as just sticking it in your pocket can easily turn it back on again.  A more thoughtful design would have made it more difficult to accidentally switch the device on, like providing a power switch that is out of the way, and locks in the "on" or "off" position.  It's very inconvenient, but I remove the battery when I'm not using this device, so that I will have a live battery when I need it.  Although the performance is acceptable, because of this basic design flaw, this product just rates 3 stars.

For me, the size (1.8" x 6") and shape of the receiver is such that it is easy for me to drop, so I added a small nylon strap so that I can hang it around my neck, which also helps with accidentally turning on issue.  Hi-Tech has an address in Illinois, by there is a "Made in China" sticker on the receiver.  It appears that several companies are selling this same unit, and are just changing the color and slapping their company label on it.  For example, the&nbsp;<a data-hook="product-link-linked" class="a-link-normal" href="/Reliance-Controls-THP110-Digital-Circuit-Breaker-Finder/dp/B000IF9KBC/ref=cm_cr_arp_d_rvw_txt?ie=UTF8">Reliance Controls THP110 Digital Circuit Breaker Finder</a>, appears to be the same as the HTP-6 Circuit Detective Circuit Breaker Finder.

This device is not really suitable for a working electrician, but is probably fine for the homeowner doing some occasional electrical work.  For $20 you get a UL listed tracer that produces fairly decent results, and could save you some time.  Just don't expect perfection, and be sure to read the instructions and become familiar with the correct testing procedures.
849086
These switches are "okay" with one huge caveat.  I wouldn't use them in anything mission critical but for light casual use they're nice little switches for a very reasonable price.  Now here is the big caveat and the reason for two stars:  there is no documentation nor any mention in the description of their behavior when turned off.  When you turn them off they shunt ground from the LED to the load terminal.  This can be solved with a diode from the negative on the LED to the load pin, but budget an extra 5 bucks or so for a pack of diodes (1N4004 should work).  If you don't use the LED or it's on its own circuit, then this isn't an issue.  These switches are actually dangerous if you're not aware of this rather inconvenient and undocumented issue, since it could cause a huge current draw from your power supply or battery when the ground for the LED and your switched circuit ground are one and the same.  These are durable enough to last for occasional use but they're not going to last for constant use.  My application is for switching a couple low current circuits on a gas heater and some LED lighting that might get used a couple times a day so they're fine.  I would prefer something much sturdier for automotive or aviation applications.  Regarding the shunting issue, I noticed a couple other reviewers encountered the exact same issue so it's not just a bad batch it's the way they're designed, so buy diodes with these if you plan on using them the way I did.
2556615
better than start capacitor and relay, no connecting wires
2558102
First pc circuit project had three glaring errors, and simply wouldn't work as written. Makes me worry about the line voltage projects.
4469507
the tester is amost impossable use ,& that was what i waS BUYING IT FOR.
I GUESS I MUST LOOK FOR ANOTHER TYPE OF TESTER
IF YOUR BUYING JUST FOR STORAGE IGUESS IT'S OK