Solnoi Electronics Mini 0.36 Digital Voltmeter dc 4.7-32V 2 wires Vehicles Motor Voltage Panel Meter led Display Color : Red

Because of this voltage meter I have a good voltage meter that I knew that my CD dulux bike's battery voltage passed me. Also, I used to know how much battery was spent when I started the light, horn, side indicator of my bike. Now I do not need a multi-meter monitor to check the voltage of the battery. Now when I turn on the bike, the battery voltage is easily visible in this voltage meter. It's very easy to set up this voltage meter bike. I give this voltage meter to 5star.

Require cover for water resistance

The Digital Voltmeter is Accurate and Easy to install.The wire soldering at the back aren't Strong.Overall it's a very good product, it does its job.Go For it.Keep in mind that it's not water resistance.

This product doesn't have a potentiometer at the back of the display to adjust the error.This is of no use to me as the error is greater than 0.5v!!If the reading is not accurate then, whats the use of this voltmeter?Returning this useless thing!

Product quality great. Works as writtenBut really over priced. In electro/radio markets its easily available at just Rs. 40-50 only

you can use for battery voltage ⚡ and very tiny i like that

Prize is high

Essential component for all cars and bikes.we could know the exact working of electrical charging system.when the voltage above 14.5 we may assume that alternator regulator problem and could avoid battery explosion.as no new vehicle have volt metre and ampere metre.this product is accurate.in my car and bike it shows voltage and functioning of regulator can easily identifiable.

High quality device. Bought 5 and they all arrived calibrated within 0.1V of each other. There's a small adjustment on the back for adjustment. Mine are red; they are not overly bright. I have mounted them behind a red Plexiglas sheet to improve contrast. The SMD devices are on the rear of the board, the mounting lugs will require a pair of stand-offs if you want to mount this on the back side using them (eyeball measurement approx 1/8"). Read-out changes about once every half second. I've got them measuring the output of an old linear power supply and they seem to be happy with that (low ripple).

Bright, accurate, looks like you can calibrate with a screwdriver, I didn't need too. Mine has a third white wire, it's so you can measure separately from the power supply, just connect with the red if you don't need it. Beware the back is exposed circuit board.

I can't understand the economics of how they produce zillions of these little things and can sell them for a couple of bucks and make money. I hope the poorly paid workers who are making these things aren't treated too badly.This is perfect for quick check of a 12 volt battery and is obviously cheap, but you must understand its limitations. It's accurate to within 1-2% which is not great, but it's fine for many uses.This contains an on-board surface-mount voltage regulator that operates the meter from the voltage source under test. The voltage regulator is 3.3 volts but starts to drop out at about 4 volts. What this means is that below 4 volts, the display starts to get dimmer. It's not really a problem at 3 volts, but at 2.5 volts the display is pretty dim. Additionally, the voltage regulator isn't regulating at that point and yes it works, but this isn't a great method of running things. I assume the voltage measuring chip has some internal reference. At 2.5 volts it draws about 2 mA.On the other end of the scale, 30 volts, the unit draws 21 mA. At this voltage it's dropping 26.7 volts across the regulator and dissipating about .56 watts, and so becomes quite warm to the touch.Still, the unit is perfect for my application of monitoring a 12 volt sealed lead acid battery that powers my telescope.Have fun and treat those workers kindly.

Used this with a push button to show what my battery voltage is on my camper trailer. I installed it just inside of the lense of my porch light on the camper. The button I put on the bottom of the light assembly. I just push the button to close the circuit, and the display shows through the porch light lense to indicate the battery voltage letting me know how much capacity I have left. You can look up battery charts that correlate voltage to capacity.

Had this mounted on our solar Chicken coop and had it where I could view how the battieries were doing via wireless camera.