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Coil Master 521 Tab

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Designed for both DIY starters and advanced users alike, the Coil Master 521 Tab exists to help custom coil builders ensure the safety of the custom coils they build. With an on-board ohm meter, a volt meter compatible with both mechanical and regulated mods, a coil rebuilding deck, coil burning features, table MOD, and reverse battery protection, the 521 Tab has everything you need to dramatically reduce the hassle and frustration of building coils while simultaneously making sure they’re completely free of danger before they are ever used in an uncontrolled, non-testing environment.

Controlled via a three-function selector switch located on the side of the unit, the 521 Tab allows you to quickly and easily toggle between resistance and voltage measuring, burn mode, and off without removing the coil from the unit. Gone are the days of switching the coil from build stand to mod, to the ohm reader, and back to the mod again. The coil can even be fired and wicked without removing the atomizer until it’s ready to be vaped. This thing will make you think of the microwave – how did we ever survive without one?

Focusing only on the incredible coil-building convenience factor provided by the Tab 521, however, completely ignores the other attributes that make this a world-class device for any vaping enthusiast. This little device boasts extreme accuracy in voltage and resistance measurements, and with its burn feature allowing you to actually test fire the coil under the exact conditions of its use, you can know before the first time you draw on your RDA that it’s safe and problem free.

Whether you’re a novice coil builder or an experienced veteran, you don’t know what you’re missing until you give this fantastic unit a try. It’s almost a foregone conclusion that you will think that this is the best vaping-related investment you have ever made.

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Coil Master 521 Tab Key Features

  • ABS Outer Casing
  • Reverse Polarity Protection
  • Resistance Measuring Range: 0.01-9.99Ω
  • Voltage Measuring Range: 0.3-9.99 Volts
  • Resistance Rate: As low as 0.2Ω
  • Spring-loaded 510 Connection
  • Chargeable via Micro USB
  • Takes One 18650 Cell (not included)
  • Dimensions: 84.5mm length, 69.5mm width, 49.5mm height


  • 1 x Coil Master 521 Tab
  • 1 x Voltage Meter
  • 1 x Micro USB Charger
  • 1 x Alligator Clip
  • 1 x Instruction Booklet
  • 1 x Security Card


Additional Information

BrandsCoil Master

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