Coil Master 521 Tab

More Views

Availability: Out of stock

Retail Price: $49.95

Our Price: $29.95

Reward Points You will earn 60 Points for purchasing this product.

Product Info

The Coil Master 521 Tab is a multi-functional device featured as an ohm meter, voltage checker, test-fire and rebuild station, or even an alternative mech mod.
Starter Kit Options


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.

Coil Master Multi-Functional 521 Tab Mini 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


  • 1 Coil Master 521 Tab 
  • 2 Terminal Connectors
  • 1 Voltage Checker
  • 1 MicroUSB Charger
  • Instruction Manual

This product is for advanced users only. It consists of risk of damaging your mods, devices, and batteries if it is being used improperly. Please make sure that you have great understanding and have done researches on this product before purchasing.

Note: When it comes to using RDA, we are strongly recommended to wash and clean all the atomizers thoroughly and carefully. Likewise, please have a great sense of knowledge when it comes to handling and using these products.

We are strongly recommended that always test the coils with ohm-meter before using them with your mods, devices and batteries. Coils with low resistance are not suitable with all mods, devices and batteries. Please make sure that your mods, devices and batteries can handle low resistance before using them.

There is always an inherent risk when using any rechargeable batteries at anytime and under any circumstances. is not held responsible for any damage for any modification of the batteries, chargers, devices and other products that we carry in any form or shape, this is including pack making.

You may also like