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Measuring Range
Current measuring range: DC 0-100A
Display resolution: 0.1A, 0.01V, 0.01AH, 0.01H (1 min)
Voltage measure range: No extra power supply DC 12-90V; With an extra power supply DC 0-90V
Design Details
Buttons
If the relay (this product doesn't contain a relay) is connected, press the button ↑ ↓ to move the yellow cursor to OUT after powering on, and press OK to control the output.
If the OUT light turns green, the output will be turned on; if the OUT light is gray, the output will be turned off.
If the relay is not used, the output is always on and the OUT light won't work.
Protection Function Menu
OVP (Over-voltage protection): 0.01V-90V
OCP(Over-current protection): 0.1-100A
OPP(Over-power protection): 0.01W-9.99KW
LOP(Low-voltage protection): 0.01V-90V
OAH(Over-charge protection): 0.01AH-9999AH
OFT(Over-time protection): 1min-99hour59min
For details on how to set each protection, please check User Manual [PDF ] from Product guides and documents on this page.
Hall Sensor
Pass the current wire through the round hole of the hall sensor, then the current will be detected. The current can be detected in both positive and negative directions.
NOTE:
Check the jumper connection, which needs to be connected on J4 when no external power supply for the hall sensor, while on J3 with an external power supply added to the hall sensor.
2-meter Shilding Wire
Equipped with a 2 meters shilded wire, which is a good option for those who need to work with a long distance.
dysfunctional vet OIF
Reviewed in the United States on September 6, 2024
i bought this to test some wind turbines, so far, i have only had time to test one.these readings and data may be subject to reset, but so far i have not seen that as i have not lost power. the unit is well made, the instructions are surprisingly cleari only have one, and it is working about a year now
Customer
Reviewed in the United States on June 27, 2023
very good, low cost battery status indicator. Used to display status of 2500 watt portable power unit. Love it, bought a second one for my travel trailer. Programmable for customization. recommend to all
RV Fridge Defend by ARP
Reviewed in the United States on December 3, 2023
I have used the Drok ASIN B08HP5VD4M (Watt Meter DC 0-300V 200A ) for applications, it it does a very good job for the price. This particular meter reads close to the values of my Fluke DMM.As a controls systems engineer, I expect the display to hold to standards such as the meter mentioned above. Also, when trying to contact Drok, there is no way I can do this, I thought I could help them with design, we speak fluent Chinese science.This meter does not have a negative sign on the display next to the amperage measurement value to show the flow of amperage. For example: Out of the battery is negative, into battery is positive (no sign on the value indicating flow direction).Rather, they have an indicator that is not intuitive at all next to the OUT value on the display. Thus, I am disappointed with this purchase due to the lack of instrument convention making the reading non-intuitive for understanding the direction of current flow.This is my first impression, I have not checked the remaining functions. Just thought I would report due to my disappointment with the layout of the display and not being able to contact the company to try and help them in the USA market.
Stephanie S.
Reviewed in the United States on February 20, 2022
As came out of box Calibration off a little. It is super easy to calibrate and work like a champ. Disconnect Battery power. Press OK and hold OK while powering up. The move curser to item to calibrate. use up and down arrows to match readings off another meter. press ok. Easy to read screen even with my old eyes. Would and most likely will buy another one.
J. Sorensen
Reviewed in the United States on October 21, 2022
The lack of documentation was the biggest problem I had with this. I found documents for items similar that gave me a general indication how to use it, and just by trial and error I got it to do the things I wanted it to do to monitor the output of my solar array. It really is very nice and has more capabilities than I expected, it was just hard to figure out. It is possible the company has since posted instructions for it; I don't know, since I got it to work I haven't tried looking again. The accuracy out of the box, for me, was perfect. Other reviewers said calibrating it is tricky but mine is dead-on! Good value for the price.
Jeff
Reviewed in Australia on May 9, 2021
Cannot see Direction of Current - Charge or Discharge
Sarah Livingston
Reviewed in Australia on January 15, 2021
ok
Brian
Reviewed in the United States on November 13, 2020
I have two of these. Yes the manual is a little difficult, but how well will you write a manual in a different language? The units are small and a challenge to configure, but once done, you will like it. I purchased the first one a few years ago and it has not failed yet. It was used to monitor the in/out voltages and amps from a cheap Harbor Freight charge controller. Since then, I have purchased another one to use with another solar project. I have also used it in connection with my large array, though not needed, it was more blinky lights.The relay trigger that is built into this has not been used yet. I may use it in the future with and Arduino solar project I am working on.The input voltage should be calibrated to match your digital voltmeter. I suggest clipping them both to the same source simultaneously to achieve this.
Todd B. Marshall
Reviewed in the United States on April 30, 2019
I bought three of these ... based on an assumption that proved to be very wrong. It's my fault. If you read the print (it's really not even too fine) they come right out and say ... this device does almost none of what it appears to do.What it does:It measures and displays real time current and voltage. I keeps track of time. It reports real time amp-hours and watt-hours. It reports cumulative amp-hours and watt-hours.What it does not do but implies it does:It does nothing to protect the charger or the chargee or load. It allows you to set elapsed time, high voltage limit, low voltage limit, high current limit, high power limit, high amp-hr limit, overtime limit. It has a display annunciator when any of these limits are exceeded (turns an arrow that is green or red or white to gray). But it doesn't show you what limit caused the termination.But much much worse. You can't do anything to protect what you are monitoring to protect. The reason seems to be they took this display off of a couple higher current (100A external Hall effect sensor in one case ... this one is internal shunt 20A) units which have support for a relay. I didn't have a need for the higher current and the 100A Hall effect unit I tested drifted so was useless to me. I simply bought this lower current internal version assuming everything else to be the same. Turns out there is no support for a relay or external control at all.Now I'm left to trying to see if there's an internal point on which I can capture the protection signal and direct it to a MOSFET and then a relay.You have to do this kind of sleuthing because (1) the documentation is of very little help at the detail level ... you're left to guessing and experimenting; (2) there are some serious software bugs (e.g. reset current to zero when it is not zero causes you to go through an undocumented calibration process; doing a long press when it calls for a short press to clear accumulators causes it to hang; (3) customer support (hard to find and reach) is polite but useless ... I'll take rude but effective any time. They just keep say "we are just a small company". Even small companies can take the time to write useful documentation.And one thing that just blows me away. It has this cute little battery display that shows a reducing green level that turns red when your near low voltage.... kind of like a gas gauge. At least that's what you'd expect it to do. But it works opposite. It starts out showing 0% at full charge and increases to 100% at zero charge. Seems like the current is hooked up backwards ... but you can't fix it.I've kept all three units kind of as an adventure game. They're really not very expensive.But I've sure wasted lots of time on this adventure game.
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