Color:4.5-30V Blue
Features:
Brand new and high quality. Measuring Range: DC4.0-30V. Minimum input: DC4.5(Below this voltage,it will show measurement inaccurate, or don’t show). Maximum Input: DC30V(please do not exceed 30V, otherwise, the meter would be damaged.). Display: three 0.56¡åLED digital tube. Display colors: blue. Refresh speed: about 500ms/each time. Allowable error: 1% (+ /-1). Power supply:No need power supply. Current consumption: Less than 20 mA, general 5-15 mA. Working temperature: -10¡æ ~ 65 ¡æ. Size:4.8cm x 3cm x 2.2cm - 1.89inch x 1.18inch x 0.87inch.
Package Included:
1 x DC 4.5-30V LED Voltmeter
NO Retail Box. Packed Safely in Bubble Bag.
I live in a 12 volt world (aboard a boat) and monitoring my battery banks is critical. I bought this because of the price ($4) and the fact that it was blue. I don’t like red though there is a 3-wire red one 3.5 12V Red LED 20V DC Voltage Digital Panel Meters available …Anyway, yesterday I made a mounting bracket (hinged so it will rotate) and attached it to my system. The wire is not marine standard (not stranded) but it seems of sufficient quality for the job at hand. It accurately displays voltage (checked via multi-meter)So, now I have one in my cabin and today I’m back ordering another one – for in the galley next to the new cigarette lighter Marinco 12V Receptacle Blk Plas Tic outlet I’m putting in for my DVD player. Can’t wait!!!The good parts:#1) price#2) the numbers are easy to read/see (even without my glasses)#3) it’s small size makes placement easyThe bad:#1) The bezel doesn’t come off so mounting took more time than it should have#2) the wire isn’t strandedWould I buy again? Yes, as a matter of fact – I’m doing that in just a few moments! :)
I bought this on a whim and figured at worst i’d only lose $6. I was very impressed with the mounting enclosure for this. I ended up installing it on my F150 to give me a digital readout as opposed to the analog (inaccurate) sweep meter. I love this little gadget!
Works fine but, as it has no separate power supply (2 wire model), it will not function if the voltage you are measuring is less than 4.5 volts. I also found these items to be not quite as accurate as stated in the specifications. A known voltage of 11.8 volts measured as “12.1” volts in the display. These are supposed to be accurate to 1 percent. That being the case, the 11.8 volts should have measured no more than 11.9 (11.918 volts). A reading of 12.1 volts is high by about 2.54 percent. I know they cost a bit more but I am going to stick with the more advanced models that have three wires (which provides for a pair of wires to power the display and a separate wire for the voltage to be measured). Like this one:http://www.amazon.com/gp/product/B00NHCQSEA?keywords=voltage%20display%20hittime&qid=1445676410&ref_=sr_1_1&sr=8-1In addition, the more advanced models sometimes have adjustment pots so you can calibrate the display to make it more accurate.
These are great little meters for the price and I’m glad I ordered two. They arrived in three weeks which is pretty good for mail from China.Checking them against my Fluke 87 one was spot on accurate and the other off by one tenth volt at 12 volts. However on the back I found a tiny adjustable pot (silver square with x cutout about the middle of the board) that can be tweaked with a jeweler’s screwdriver so they are both spot on now!
Wow - how cool is this. It’s approximately 2” wide by 1” high, with a pair of “catches” on the top and bottom. (You push the display through a hole in your panel and these click to hold it in place - not sure what to call them.) I just let it sit on my desk for now. It tells me the battery voltage level of the batteries in my small, off-grid experimental solar power setup. I run a small ham station and up to three PCs and a pair of displays on this system so the battery charge level is important to me. I used to have a swing-needle volt meter. It worked but I wanted more precision. This tells me to the tenth of a volt where I’m at power-wise.In back is a circuit board with a 2-wire plug and socket for input. I carefully pried the plug out of its socket and soldered the red and black wires to a pair that plugs directly into my DC voltage distribution panel. I plugged it back in and the pretty blue lights came on to tell me my batteries were at 12.7 volts :)Love it - highly recommend it for an application that requires a simple 4.5-to-30V display that is easy to read, even at a distance.
This are rated from 4.5 to 30 volts, actually read as low as 3.5. The shipping was measured in weeks (that’s what cost the 1 star), the price incredible and the items work flawlessly. I was able to cut a hole with a dremel in the container I am using for a battery charger that that meter snapped into without any problems.
I will probably write more about it, after I use it in the project, but so far, it had arrived undamaged and worked right out of the box. I touched the terminals of a 9v cell to test it, and it lit up in blue and worked.However, the voltage reading is floating around after the dot, if you hold it on a battery, it floats from 9.2 to 9.7 up and down, which the battery obviously in not capable of. So there, but for the price, I think this is quite reasonable.
Got it today. My second order. Only two pins. and Min voltage to operate (3~5 volts), but still worth it.. 30vdc max. . another con is there is NO adjustment calibration pot, but this one was very accurately displaying correctly. I would suggest ordering ahead and order enough for your needs, because transit times will vary ..
this came quicker than the expected delivery date given by about 15 days at least. works great. the only bad thing is the small delicate wires that are soldered on came off easily…
This device is not accurate at all. on a 12v battery it show 13.7v. 12v was double checked with an analog meter, and an inverter with lcd showing voltage input
Wires are too thin and not soldered very well. Other than me breaking out the soldering station and resoldering wires this meter works well
Solder came off. Company was informed. Just quit emailing after asking what I thought
like it
Best volt gauge for the money. I installed mine six months ago and still working great.
Could use reverse polarity protection.
works good
doesn’t work, Lights up but doesn’t read anything but all 0’s. comes form china mailing address so won’t return it.
comments powered by DisqusUsing it in my 96 f150 to measure the electrical system voltage. Hooked up a small switch so I can turn it on when I want or you can connect power to the ignition / ACC to turn on…