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521 Tab by Coil Master

Brand: Coil Master

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For the coil builders of the world, the Coil Master 521 Tab is a nifty piece of kit to have in your vaping arsenal. Not just to be used for reading your coil resistance, the 521 Tab also has a voltage meter for mech mod users as well as a coil burning function to oxidise your coils.

  • £32.95
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Key Features

Simple to use and with plenty of functionality, the Coil Master 521 Tab is a versatile Ohmmeter for any coil builder. It features an impressive resistance detection range of 0.01ohms to 9.99ohms, you’re covered no matter your build. There’s a burning mode too so you can oxidise your coils before you fit them into your build deck. Then, all you need to do is wick, drip and you’re ready to vape.

With an additional option to test voltage output, the voltage reader extension clicks into place. Ideal for mech mod users, you can safely test your voltage output to make sure it’s safe once you’ve reached your desired coil resistance.

The Coil Master 521 Tab requires a single 18650 battery but is also rechargeable through a micro-USB port.

Additional Information

Coil Master 521 mini Tab Features

  • Resistance Measuring Range: 0.01 – 9.99 ohm
  • Voltage Measuring Range: 0.3 – 9.99 Volt
  • Resistance rate: As low to 0.2 ohm
  • Connection : 510 threaded with spring loaded pin
  • Charging: 4.5V/ 750mah Micro-USB Charging input
  • Battery: Lithium 18650, 3.7V (Battery not included)
  • Dimensions: 49.5mm x 84.5mm x 69.5mm
  • Reverse battery protection


  • 1 x Coil Master 521 Tab Ohm reader
  • 1 x voltage reader extension
  • 1 x USB charger
  • Alligator clips
  • Coil Master 521 Tab Instructions
  • Coil Master Security Card

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