P**J
Great Product
I am pleased with these little panel meters for the price. The display is bright and easy to read. There are no instructions included for hook up but there is a label denoting the 4 contact points. #1 and #2 are for the voltage input or load (for the amp meter). #3 and #4 are for the power to drive the meter module. They do not power by the voltage they are reading on the display. They need 8 to 12 volts DC to operate. I ran mine using an old 9 volt DC wall wart supply and mounted the wart inside my project. Note too, the polarity is not listed on the device for the required power supply. But I have determined that #3 is positive and #4 is negative.
Q**P
Very intolerant of anything other than a PERFECT power supply
This thing will fail if you look at it funny. I understand if a product's design has tight requirements around its power supply. Most do. But there is nothing to indicate that in the Amazon description for this product. Once you get it, though, inside the box is a small slip of paper that cryptically warns that the unit "will burn" if subjected to anything other than normal household sine wave power. I wish I could find it to share the exact wording.I first checked it by using a common 9V battery for power and sampling various power sources--line receptacles and my landscape xrmr and cross checking with my multimeter. It has a trim pot which I used to calibrate it. Everything was fine at that point.Putting aside the lack of clarity around the specific power requirements from that little slip of paper (and that I don't have an o-scope handy to determine exactly what the PS waveforms look like), I fully expected the details of how to power this thing to be included in the product description. I don't want to measure line voltage. That's why I chose this unit, because it can measure VAC all the way to zero. Specifically, I want to know how far my landscape transformer's VAC (yes, they are AC, not DC in most cases) as the load drops the voltage. I chose this meter because it was the only one I could find that measures VAC in the range that modern LED landscape lighting runs on.I thought a big bonus would be that I could also power the meter from the same source I was measuring, which falls into the stated design (8-12 VAC/DC). I was careful to limit the voltage with a simple voltage divider so that the meter would never see more than 11 VAC (given a max of 15VAC), which I verified repeatedly with my multimeter.Nope. It failed immediately, leaving only the blue backlight LED running. The IC on the board, which I suppose drives the LCD panel, was hot to the touch, so it's obvious this thing hates something about being powered by the same source it's measuring. It might be worth noting that the DROC current meter I also have, and which looks almost identical to this, has the same stated power supply specs...but is tolerant of the same power (which was wired in parallel with the voltage meter).CONCLUSION: The vendor omits important details about the product in the product description. The product is also exceedingly sensitive to failure.
C**E
Worked great. For 2 days.
It was hard to find an AC Voltmeter that started a zero volts, so I was happy to find it. I used it, hardwired and mounted in an enclosure, with my Variac, powered with an old 8.5 volt AC adapter. Like the headline says, it worked great, for 2 days, Then one time when I turned on the Variac, the backlight of the volt meter came on, but nothing else. Returns seem easy, so maybe I'll get lucky with the 2nd one.
A**S
It's Accurate enough...
Works good...Accurate to within .8 volts when compared to my other meter when checking 120V lines. As good as this is, it does however lose 1 STAR for leaving some trivial information off of the connector label, such as + , - , Hot and Neutral.
P**.
Great to keep eye on battery charge
Over the past five years I have purchased several of these voltmeters. I have installed them in our camper, the moped, the golf cart, as well as other play toys to monitor the batteries.
S**K
Great voltmeter. Working perfectly after two years. Reads within 2% of Fluke multimeter
Great voltmeter. Working perfectly after two years. Reads within 2% of Fluke multimeter.Easy to connect and easy-to-read. Pleasant back light.
T**B
2 bad ones
When it worked it looked great but I have had 2 of these and they both stopped working after a few time.
M**H
Use a isolated power supply to power the unit
Yeeco needs to put some directions in the use of this product, no mention of using an isolated power for this unit, or the thing blows up!
Trustpilot
3 weeks ago
2 weeks ago
