Digital Ohm Reader Voltage Tester

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1. Can’t go wrong!

   Posted by Michael Neubauer on Mar 14th 2025

   It works and does exactly what it is supposed to do. My coils show the same Ohm’s on the tester as it does once my build is complete and put to use in my RTA. So I know it works perfectly fine. You can’t go wrong with it especially once you factor in how much you’ll save compared to other Ohm readers you can find online.

2. Have No Choice !

   Posted by Guido on Jul 3rd 2021

   It has been a while since I bought this along with a bunch of other small items almost a year and a half ago. Just saw this again in my email, so I figured I should review the item.
   
   This ohm tester was inexpensive, but it was still too expensive, only to discover that it was junk. I got a reading off it once or twice, but the 510 broke loose and rotated in the plastic housing. Everything inside is a blob of hot glue ! I scored a full on Coil Master 521 Tab with all the goodies (Not The Mini) for about $8 + Shipping at ejuicesteals com Now THAT has been a delight and I am glad I bought three of them lol

3. Possibly Usable !

   Posted by Brian (Guido) C. on Jan 28th 2020

   As I screwed in a Used TFV8 Beast with juice In it, with the meter power ON, as soon as the connector was in far enough it read .25ohms but the tank was really loose and as I screwed it on farther it jumped around a lot from .25 all the way up to .63 but then as it got more snug on the threads it settled down to .19 but the tank wasn't all the way threaded yet, so I continued just until it stopped turning, BUT before I got that far the reading dissapeared and it would not give anything other than three dashes and the tank was a LONG way from being tight, or even snug. Turned it off and back on again and let it sit a min. ..--- just dashes! Start to unscrew the tank and numbers appear 7.52ohms, 2.83ohms, 5.08ohm, etc. etc. Tried an empty tank next, it is a brand spanking new TFV16 with a .17 coil in it and as it made contact it reads .22 screw it just a tad farther onto the post and --- (Dashes again. I had to tilt the tank side to side and the numbers jumped around and I got a .18 reading, and flickering back and forth between .17 and .20 over and over again, But that is a Premade screw in Coil and who cares what those read?
   
   I spun on a Brand new TFV8 Beast tank with a Brand new/ unused RBA head and, ...... Absolutely NUTHIN' But Dashes no matter what I did. Screw it on farther,... or less, ... Wiggle and jiggle, ... Nothing but dashes. Maybe the RBA is shorted? I'll try a Brand New TFV12King with a never used RBA head in it and, ... Just dashes. Oddly I found that trying to tilt the top of the tank to the left it would read something, but is it a reliable reading? Not Sure. Screw the tank on a little farther and it goes back to dashes, tilt slightly and it comes back but jumps around from 2.09 to .74 to 1.38 ohms. Tilt top of tank to the right and dashes again. SO, I find that if you screw the tank on until it Just makes contact with the pin and screw it on very slowly and Stop way before it gets anything like tight, or even snug, it is more steady in its reading. But is it accurate, or even close, or even Far close? Who knows.
   
   I screwed my Aspire CF battery onto it and it wouldn't read Anything, just dashes and Nothing would change that. SO it seems it is even More useless at reading voltage as it is at reading ohms. Oh Well, maybe I just got a bad one?
   
   Either way you are going to want to stick a folded up matchbook cover on top of your batteries inside because they jiggle around and pop out of their socket because the spring is long and the batteries are short and there is too much clearance between the batteries and the battery hatch door.
   
   If I spent more than $3.29 on this I would be fairly pissed. I'm not sure if I can use this as a temporary until I find a larger 521Tab (Not the Mini), ... but If not, then it will get fed to the recycle bin.
   
   Ugh, I'm done messing with this thing for now.

4. Awesome

   Posted by Aaron Gracey on Jul 31st 2019

   Good product

5. Terrible and unusable

   Posted by Amber on Apr 21st 2019

   This item was a waste of time and money. I understand why it was on clearance when I bought it, because I didn't even get it to do a reading once. I attempted to screw an RDA into it, and the connection to the unit itself came right out of the base, like it had completely corroded. I had to use pliers to remove it from my RDA.
   Absolutely a case of "you get what you pay for" except considering the brand, I expected better.

6. Shaky at times

   Posted by Charles Roberts on Mar 11th 2019

   Use fresh batteries, other then that, does what it says for $.99

7. Disregard last review

   Posted by Patrick McGinnis on Feb 14th 2019

   Works, but must have brand new batteries in it to work properly. Disregard my last review please. Central vapors, thank you.

8. Doesnt Work

   Posted by Patrick McGinnis on Feb 14th 2019

   It turns on, but it wont read anything I put on it. That's a bummer, but for $0.99 ill use it as a built deck I guess.

9. BROKE ON FIRST TRY

   Posted by Cameron Irving on Dec 26th 2018

   I screwed my tank into this thing and the whole socket came out. I had to get pliers just to get it off my tank. Then I tried screwing the thing back into place and it does not work, the socket is just held into place with some glue and now its not making contact. Peace of junk. I paid almost five dollars to have it shipped. Disappointed.

10. Coil Master Ohm/Volt meter

    Posted by Steven King on Sep 20th 2018

    When I saw this on here for $0.99 I seriously didn't believe it. I ordered expecting it to be a piece of junk that didn't work or have some kind of issue... but it actually works great! I'm shocked... There as absolutely no other place where you will find a deal like this... Even at it's original price of $7.49 it was still a good deal. At this price you would be a fool not to grab one. Unbelievable value!

11. good for the price

    Posted by Norma Bishop on Sep 16th 2018

    It's good to have when needed than need one and not have it.

12. works great

    Posted by Paul Campbell on Sep 5th 2018

    Can't beat it for the price coil master products always a good purchase and super fast shipping as always

13. good for the price

    Posted by Norma Bishop on Aug 15th 2018

    Works. A must for anyone just starting.

14. Didn't arrive

    Posted by Michael Russell on Aug 14th 2018

    Shit

15. coil master ohm meter

    Posted by Pat milligan on Aug 1st 2018

    DIDNOT RECIEVED THIS , WAS SHORT ON ODER

16. coil master ohm meter

    Posted by Michael Spangler on Feb 18th 2018

    Very accurate mod shows exact what the meter reads well made and great product

17. Great for starting out.

    Posted by Brandon on Dec 17th 2017

    Came nicely packaged. It's nothing special but I promise it gets the job doneand is accutate. It requires 2 AA batteries
    that are not included. It's perfect for starting out. So buy it get building.

18. works great for a first timer

    Posted by Eric on Dec 16th 2017

    First build was off by .05 ohms between the mod and tester. Realized it may have been my own fault. Hasn't been off by more than .01 since. Great deal imo

19. i like it

    Posted by Theresa on Oct 9th 2017

    When your first starting out this was a great buy!

20. Great device!

    Posted by David Stewart on Sep 2nd 2017

    Works perfect, def a steal!!

Showing reviews 1-20 of 25 | Next