Coil Master™ 521 Tab

By Coil Master

5 reviews
List Price: 49.99
Sale Price: $35.99

Sorry, this product is currently unavailable.

Your sensitive information is of the utmost importance to us. Rest assured that when purchasing from Vapor Authority, all of your information is transmitted using Secure Sockets Layer (SSL), which encrypts your data. Your payment is conducted through our merchant bank’s secure servers, and your payment information is never stored within our internal servers at any time.
Don’t worry – you’re covered! You can always purchase with peace of mind from Vapor Authority. We offer you a full 60-day in-house warranty on all manufacturer defects, and a 15-day period for returns and exchanges on unopened items as well. Full details on our Warranty page
We pride ourselves on carrying only 100% authentic products. To ensure this, we solely buy directly from the manufacturer or a manufacturer authorized distributor. Vapor Authority does not carry any clones or knockoffs whatsoever—guaranteed!
At Vapor Authority, we are dedicated to providing you the best shopping experience possible. To help further this effort, we offer same-day shipping on all orders placed by 12:00 PM (Pacific Standard Time). Full details on our Shipping page.
Sale coil-master-521-tab

Coil Master™ 521 Tab

The Coil Master 521 Tab is an absolutely indispensable tool for any builder. This marvelous device makes building your coils and using RDAs / RBAs astronomically easier and more convenient. The  Coil Master 521 Tab provides virtually everything you need to easily build your atomizer coils efficiently, perfectly, and professionally all in one unit.

The Coil Master 521 Tab is made with high-grade Acrylonitrile butadiene styrene (ABS). This particular material is just as light as Polyurithane, but substantially stronger. This makes the 521 Tab durable and long-lasting. The device is furnished with an OLED screen, which clearly and accurately depicts all of the necessary information. The screen is one of the many ways Coil Master made the 521 extremely user-friendly and easy to operate.

Ohms Meter:

The Coil Master 521 Tab is equipped with a state-of-the-art ohms meter. By simply screwing on your atomizer to the allotted 510 slot, the 521 Tab will accurately read the resistance of the coil. The Coil Master 521 Tab can detect resistances as low as 0.01 ohms to as high as 9.99 ohms. This broad range of resistance detection allows you to use the 521 Tab with virtually any atomizer coil you build.

Voltage Meter:

The Coil Master 521 Tab can accurately measure and read the voltage output of the battery you are using. This takes the guess work out of assessing the amount of power that will be running to your atomizer. This information is extremely important in obtaining the absolute best vaping experience possible. The 521 Tab can read voltages as low as 0.3V to as high as 9.99V. This wide spectrum of power reading affords you to use the Coil Master 521 Tab with virtually any battery you wish.

Coil Building Deck:

The Coil Master 521 Tab is furnished with a spectacular coil building deck. This essential feature provides you with a platform on which you can conveniently build your coil without fumbling around to keep it steady. The deck holds your atomizer firmly in place, making it much easier to complete the build.

Test Station:

Coil Master brilliantly included the ability to test fire the atomizer coil while attached to it. This eliminates the need to remove the atomizer coil and screw it onto your battery to test it. You can test the coil, make the necessary adjustments, and retest as needed without ever having to remove the atomizer from the 521 Tab.

Functional Table MOD:

Adding to the extreme versatility of the Coil Master 521 Tab is the ability to actually use it as a MOD. With this capability, you can build your coil, test it, make necessary adjustments, then screw on the top and mouthpiece and take hits. Once you know that everything is to your liking, you can then either continue vaping with the Coil Master 521 Tab or screw it onto your MOD and enjoy. This is a very intelligent addition by the engineers and designers of Coil Master.

Whether you are thinking about building your own coils or are a coil building expert, the Coil Master 521 Tab is an absolutely essential tool that will help make your coils much more professional in a fraction of the time.


Coil Master 521 Tab Features:

Ohms Meter

Voltage Meter

Coil Building Deck

Test Station

Functioning Table MOD

Extremely User-Friendly

Built With ABS Plastic

Clear OLED Screen

Wide Range of Voltage Reading

Broad Range of Resistance Reading

Makes Building Much Easier and Precise

Helps Make Coil Building Safer

Reverse Polarity Protection

Coil Master 521 Tab Specifications:

Resistance Range: 0.01 Ohms - 9.99 Ohms

Voltage Range: 0.3V - 9.99V

Minimum Resistance Rate: 0.2 Ohms

Threading: 510 (With Spring-Loaded Pin)

Charging: 4.5V / 750 mAh (Micro-USB Cable)

Battery: 18650 (3.7V) - (Sold Separately)

Casing Material: Acrylonitrile Butadiene Styrene (ABS)

Dimensions: 1.94 Inches (49.5mm) x 3.32 Inches (84.5mm) x 2.73 Inches (69.5mm)

Weight: 6.70 Ounces (190g)

Coil Master 521 Tab Includes:

1 x Coil Master 521 Tab

2 x Terminal Connectors

1 x Voltage Checker

1 x Micro USB Charging Cable

1 x User's Manual

Coil Master 521 Tab Function Guide:

I = Turn on Resistance and Voltage meter, Flashing ring light

O = Power Off

II = Burning mode, <FIRE> lamp

Reviews for Coil Master™ 521 Tab
4.6 out of 5, based on 5 reviews
from New Paltz NY on
I'm not an old pro at rebuilding or coiling. This kit is essential. It's crucial that you are able to check and build carefully. This kit is on it. Vapor Authority is now my place to go. Phenomenal customer service. If I need it and vapor authority has it I Look no further.
Jane Quinn
from Indy on
Great tool versatile must have for coil builders! I have a couple mech mods that do not allow use of a regular 510 connection, Kennedy ruby and rig mods. I was using a standard meter reader, the coil master has alligator clip options to use for checking resistance, it also allows me to check mods for voltage drop eliminating need for additional tools.
from Va on
This is a good product however I give it 3 stars because I had to fix it! The 510 spring loaded connector became very loose on mine after a few uses so I took the mod apart and soldered the connector solid! BAM no more ohm issues! I love fixing things or modifing to make things better! Second this thing needs two 18650's not one. It would work much better and the battery life would last longer! Other than that I love this thing and the battery issue is really easily solved by keeping a fresh battery on hand when building! Major props to VA for there killer service and great products! VA is my one stop vape shop! Fast shipping, best customer service!!!
from Los Angeles, CA on
Absolute must have for anyone who likes building coils. The coil building deck allows you to fire your RBA with the press of a button is key. This thing is awesome!
from Fort worth on
I have an ohms meter which is a must for building, if for just for the stability it gives you when building. But there is nothing like this 521tab. Sooooo nice to build on and accurate! I used to build on my meter then take it off and test fire on my mod to get the hotspots out and all adjusted. Now I can complete the final build all on this wonderful tool. Coil builders do yourselves a big favor and get one. Thank Vapor Authority for the great price and service. They have it for less than coil master sells it for!