bayite DC 5-120V 100A Mini Digital Current Voltage Amp Meter Ammeter Gauge with Hall Effect Sensor Transformer

The instructions are incorrect - When the sensor is unplugged, it will not calibrate. It must be connected to the rest of the system. Mine, too, does not calibrate perfectly; it reads 0. There is no current flowing at 2 amps. It's what I use to check the output of my boat's alternator. As long as you need to distinguish between 30 and 50 amps, rather than 31 and 31. 1. You might be able to use this. It's also worth noting that for "reverse" flow, it will display a decimal place on the far right, so make sure it's turned the right way.
EDIT: I recently returned from a four-day trip and found this to be extremely helpful in monitoring alternator output. It also drifts a lot, as I noticed - It appears to go up to 0 at some point. 8 amps at 0 actual current, then drift back to 0.
So - Although helpful, it isn't particularly precise - 1% of 100 amps for example of 100 amps for I still believe I got my money's worth, and reading an analog 100 amp meter would be no more precise. br>ADDITIONAL EDIT - Temperature appears to affect it. When it's cold, the 0 setting becomes 0 and when it's warm, it becomes 0. When it's hot, it draws 8 amps. If you don't require sub-amp accuracy, it's still worth $16. I have some shunt meters that are nearly perfect, but they require cutting into the wire and are not suitable for positive side measurements such as alternator measurements.

Yusuf Marsh

| Apr 10, 2021

These are used to monitor the current flowing into and out of my RV's battery bank, as well as the current flowing from the solar panels. They do a fantastic job. The stated value is zero. I find that the accuracy is 2 amps, but I find that the accuracy is 0. In my installation, I was able to get a 4 amp accuracy. The majority of solar salespeople try to sell the $150 model. 00 monitors use shunts that are more difficult to wire. Because of the low current draw, I am quite pleased with these and leave them running 24 hours a day, seven days a week. The current into and out of the battery bank is displayed on the left meter. The solar current and panel voltage are alternating on the right meter. The right meter goes off when the sun goes down, but the left panel stays on all night to show me my current consumption.

Brodie Hunter

| Jun 08, 2021

I'm not sure how accurate it is for the present, but I just need a rough estimate. The voltmeter is in perfect working order. In my mobile ham radio station DC distribution panels, I used three of these units (two 100A and one 400A). Look at the photos. The transducer is just big enough to fit around a 0000 gauge cable (see second picture). One star deducted because mounting these on a panel is difficult, as other reviewers have noted.

Oakleigh IQBAL

| Feb 04, 2021

This was a breeze to connect. Only the pos and neg 12 volt power wires, as well as the inductive signal ring, are included. The signal ring simply slides over the wire carrying the amps you'd like to track. The inductive pickup ring comes with a 4-foot extension wire, allowing the monitor to be mounted away from the current carrying wire if desired. br> I have one in my RV and one in my boat, both of which monitor the amps flowing from the main battery cable to the house battery banks. It displays my incoming amps, and when the charging sources are turned off or unresponsive, it displays my outgoing amps. br>I ran the power wire through a small rocker switch to allow the display to be turned off when not in use. It can't really show the power draw of two LED RV interior lighting bulbs, but it can show at least 0 when a few more LED bulbs are turned on, or when a fan or other device is turned on. It becomes accurate at a 5th of an amp. It will easily display the amp draw of a single incandescent bulb, as these bulbs typically draw at least an amp of power. This is NOT an accumulative amp COUNTER, but rather an amp meter that will display the amps going OUT or IN through the wire at the time it is being viewed in real time.

Alexis Wolfe

| May 01, 2021

When my 2005 Porsche Boxster was turned off, I noticed an intermittent voltage draw. I tried the standard amperage test with a DVOM and removing fuses to trace the draw, but it was difficult and inconclusive, so I went online and looked for an "automotive ammeter. " After reading the description, I made the decision to purchase it. br>I did, however, disconnect the negative terminal as well as the cable. On the Boxster, this was a piece of cake. The Hall effect sensor easily slipped over the cable, and the cable was routed through the firewall via a convenient plug right behind the battery. It was a simple connection to make. A metal frame for the meter was also made by me. I like the mode-switching buttons, but they were useless on the back. To control the modes from the front panel, I soldered two wires to the switch contacts and mounted a small push button on the face of the bezel I made. br>It's fantastic. When I first insert the key, I can quickly check battery voltage from the driver's seat. Then, by switching between amperage and voltage, I can see current draw while driving or quickly check current draw from my seat. This is how I discovered my leak as well. The stereo system appears to be the source of the issue. The amplifier will not be turned off! This is a fantastic method.

Caden Pearce

| May 21, 2021