Coil Master
TAB 521


Coil Master Multi-Functional 521 Tab Features:

  • Ohm Meter
  • Voltage Checker
  • Coil Rebuilding Deck
  • Test-Fire Attys
  • Reverse Battery Protection
  • Resistance Measurement Range: 0.01 – 9.99 ohm
  • Voltage Measurement Range: 0.3 – 9.99V
  • Min Resistance Rate: 0.2 ohm
  • Spring Loaded 510 Connection Pin
  • MicroUSB Charging Port
  • 18650 Battery not included
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The latest innovative accessories from Coil Master introduced at the 2015 ECC in Pomona, the 521 Tab. This multi-functional device acts as an ohm meter reader, voltage drop checker, rebuild deck, test fire station, and you can even vape with it! It is equipped with a 510 spring-loaded connector for attys of all size, 2 hole connectors for the included Voltage Checker and Terminal Connectors, 2-way rocker switch, and intuitive OLED screen with pipe symbol for test-fire setting and measurement readouts. While your RDA is attached and juiced up with today’s top e-liquids, you can read the current ohm status and test fire it or attach the Voltage Checker and screw your mech mod for voltage gauge. Overall, this is a game-changer, one of the most fascinating device engineered for advanced vapers and DIY cloud chasing enthusiasts.


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TAB 521”


15738 100 Ave NW
Edmonton, AB
T5P 0L1
  • P: 587-990-3032
  • E:

Store Hours

  • Monday to Friday: 10:00am - 8:00pm
  • Saturday: 10:00am - 7:00pm
  • Sunday: 11:00am - 6:00pm


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