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Coil Master 521 Tab
CoilMaster 521 Tab Ohm Meter Coil RBA Deck

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Price: $30.99

Stock Status: In Stock

Sold individually unless otherwise stated. See package contents below
Due to regulations, we are unable to ship E-Liquid into the state of Indiana.

Coil Master 521 Tab

*This product has been discontinued in favor of the Coil Master 521 Mini Tab.*

Multi-functional device designed for both DIY starters and advanced users, Coilmaster 521 tab assists you in building coils.


  • Ohm-meter
  • Voltage meter for Mechanical and Regulated MODS
  • Coil rebuilding deck
  • Coil burning
  • Table MOD
  • Reverse battery protection


General specifications

  • Dimension : 49.5mm x 84.5mm x 69.5mm
  • Weight : 190g
  • Housing material: ABS

Function Selector :

I – Turn on Resistance and Voltage meter, Flashing ring light
O – Power Off
II – Burning mode, <FIRE> lamp on

Other Coil Master Products
Important Note:
Rebuildable atomizer coils and wicks have known risks.

Rebuildables are for experts, not average or beginner vapers with no multimeter or knowledge of how to use a meter, or when a meter must be used, or how electronic devices work. These materials cannot safely be used by the inexperienced or those without basic knowledge of electronics.

This is because:

1. A rebuildable coil/wick MUST be tested carefully with a meter before it is used.
2. If it is not tested it is entirely the risk of the user.
3. Faulty wicks/coils WILL blow electronic devices.
4. New coil/wick units must be tested and then used first on a strong basic electrical APV that has short circuit protection.
5. No new coil/wick assembly should be used on an electronic device until known to be safe.
6. These items destroy electronic devices if faulty. This is a known issue.

Package Contents:
  • 1 x Coil Master 521 Tab
  • 1 x Voltage meter
  • 1 x USB charger
  • 1 x Alligator clips
  • 1 x Coil Master 521 Tab Instruction
  • 1 x Coil Master Security Card

Average Customer Review: 5 of 5 Total Reviews: 68 Write a review, get a promo code!

  0 of 0 people found the following review helpful:
Coil Master 521 Tab March 13, 2018
Reviewer: Dale Harshman from DAYTON, OH United States  
Arrived perfect condition, great price. I really like the ease of building, testing and pre firing , my builds. Great product.

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  0 of 0 people found the following review helpful:
521 tab March 12, 2018
Reviewer: Madman from United States  
Great product, quality made and completely accurate

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  0 of 0 people found the following review helpful:
March 9, 2018
Reviewer: Anthony Berry from Hazlehurst, GA United States  
Have been looking for this for a minute so glad I found it, great price and fast shipping!

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  0 of 0 people found the following review helpful:
MVS3 February 16, 2018
Reviewer: Anonymous Person from Round Rock, TX United States  
Fast service! They do a great job of keeping you up to date with the status of your order.

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  1 of 2 people found the following review helpful:
Horrible June 2, 2017
Reviewer: Flavor Clouds Vaping from Melbourne, FL United States  
This thing is garbage in my opinion, Will not fire below 0.1 ohm for me anyway and that is a huge con, It always gives me readings that are way off of what they truly are. When it does fire it takes forever to get the coils to burn, good luck with pulsing, that is not even an option. I have to use a mod to get the correct ohm readings on coils I made. This is the worst buy I have made yet from coil master. Back to the drawing board on this one. I had good expectations for this but I don’t even use it anymore. It also only holds 1 18650 battery, I would think that coil master would have thought ahead that people are building super low ohm builds now and we are not in 2014 anymore. This is worthless if you are trying to fire Fused Clapton’s, Staggered Fused Clapton’s, Staple Staggered Fused Clapton’s, just worthless. Not the tool for building today’s coils. Someone needs to come out with a solid reader / burner, this is not the one.

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