A1 Fully Automatic Anti-Burn Intelligent Digital Multimeter, Auto Senses The Zero and Fire Wires, Fast Accurately Measures Voltage, Current, Conductor On/Off, Color Ring Resistance

Works Great

1. Wrong description: you need to put black lead on NEUTRAL & red lead to HOT to get a reading (voltage & LIVE red alert).2. Tip leads are too short. You just can not insert into openings directly to get a reading. If you want to keep this tester, you would have to purchase separate test leads.33. No matter how many times to set to F, this tester switches to default C. You have to switch to F every time to see room temperature.

Lo que me agradaría es tener este medidor en buen funcionamiento para cuando lo necesite,?por esa razón lo compré.

PROSSenses automatically whether you are measuring AC volts , DC volts, or resistance. That is pretty cool. No need to twist selector, which also makes it easy to use and understand.Very small, fits in a large pocket.NCV -Non Contact Voltage sensor (for AC voltage), in HIGH sensitivity setting, is very sensitive. This is good. I've seen a number of NCV tools that are not sensitive enough. In LOW sensitivity setting its closer to what I've seen in other NCV tools. Even in this setting it is more sensitive than some of the other tools I've seen, so good. The RED color of the display, and fast beeping shows that you are very close to the source, (GREEN) and slow beeping, shows that you are further away. I'd recommend testing it first on some known AC sources so you get used to what is normal.Tiny work light is a nice feature.CONSAC voltage accuracy: Less accurate than my other cheap meters. For example, the actual voltage is 117.9. This meter measures 120.0. This is too large a difference for my usage.DC voltage accuracy: seems to be OK.Resistance accuracy: <15 ohms not very accurate compared my other cheap meters. This is a problem, I'm measuring relatively low resistance when measuring the quality of certain connections.Leads are smaller than normal in how they connect to the meter body, so I can't use other standard leads I've purchased (e.g. alligator clips).Other Notes:Measuring AC voltage will also give you the frequency in the same window. That's cool.Meter shows the ambient temperature in C. Unfortunately I'm still a F guy and there is no way to change it to F. I don't need this meter to measure temperature, so not a big deal.Missing features found on even some cheap meters including AC current. But I don't use AC current or the other features very often, so not a big deal for 95% of my usage.Product comes with a "Quality Certificate" which is supposed to be stamped with a QA seal, production date, etc. All of this is blank. Which is ironic. They included the certificate to make you feel like the product got tested before shipping, but then don't fill out the certificate. Makes you feel worse, not better.

Everyone who does a bit of electrical work has at least one meter that can measure voltage, amps, resistance and continuity. I have had a bunch over the years, old fashioned moving needle and digital.But the ability to test for live voltage in an insulated wire through the insulation is something new for me. Hopefully it will replace the rather frenzied and desperate slapping of the naked copper wire end with a fast finger, hoping for no pain. If this little device can save from that stupid practice in the future then I already like it. Well I tried it and it works. No more suicide slapping! I plugged in a fan heater, and once it was running, I offered up the testing probe end of the BSIDE tester to the mains cable. The screen positively bounced into life with a gleaming green display. Take it off the cable and it stops. 5 Stars. You had me at test.The rather quirky controls allow you to choose between "Auto", "Lo" and "Hi". The Lo setting was great for when you can actually touch the plastic insulation of the wire but the Hi gives you some sort of ground penetrating radar capability. I poked it at the wall near a light switch and it had some convulsions flashing. It's not going to pin point the wire exactly but it gives you a clue that you are close.The most obvious feature of this little device is that the three red buttons are a bit weird. On the left is a nice standard ON/OFF which only responds to a persistent press. Handy for not going on in your tool box accidentally. But the center and right buttons are V-Alert + Thermometer Image and SEL + Flashlight image. These guys will not be invited by Apple to design the next iPhone. But once you wander into their strange little world, they sort of do what you expect. There is quite a bit of experimenting because the instructions are almost like some spy microdot which only a magnifying glass can decode. Lots of tiny pictures and tiny text. But hey we've all seen that a few times.I tested a couple of resistors that I had handy. First I tried to be clever and choose a range but the Auto setting worked the best. I tested a red red red band resistor and it nailed 2.20 kilohms time after time. The 5.8 meg ohm resitor was a bit more random but higher values are always more of a challenge.One needs to be careful when inserting the (batteries not included) two AAA batteries. The battery compartment has images indicating which orientation is correct for two AAA cells but the end contacts are the same chrome plates at both ends. Usually the positive end has a flat plate to contact and the butt end has a little spring. Those clues give you a bit more confidence that the batteries are in the right place. Be a bit careful here.The tester is supplied in a tough little case a bit like one of those chunky old fashioned glasses cases that your Dad had. It would nice if it had a logo or words on the outside but it provides all the protection that is needed. The test leads are a but stiff but they do the job.An strange and quirky device, but I think, in time, it is going to win me round.

Small and light weight. It worked and auto detected AC vs DC.

For general-purpose, around the house DIY work where a multimeter is required, this little unit fits the bill without having to make an expensive investment. I tested this unit against both my Klein and Fluke multimeters, and the accuracy is comparable (no variance). This meter comes with a case to manage your meter and cables. It's great for basic wiring work - voltage, resistance, and continuity. There is both visual and audible indicators, and the non-contact voltage sensor is sensitive in detecting voltage. The included screwdriver is for the battery compartment plate.