We have stopped producing the Coil Master 521 Tab. We only have Coil Master 521 Plus Tab & Coil Master 521 mini V2 now.
0 out of 5 based on 12 customer ratings
(12 customer reviews)

$49.99 $39.99 20 % OFF


SKU: C060364.

Shipping: Free Shipping

Handling Time: 1-2 business day

Delivery: USA(3-7 business day) Other Country (7-15 business day)

Out of stock

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Coil Master 521 Tab

Multi-functional device designed for both DIY starters and advanced users,
Coilmaster 521 tab insure you not building a dangerous coils for the mod you are using.

– Ohm meter
– Voltage meter for Mec. MOD/Regulated MOD
– Coil rebuilding deck
– Coil burning
– Table MOD
– Reverse battery protection

– 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 (Batteries are not included in the product)

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

Package Contents:
1.Coil Master 521 Tab x 1
2.Voltage meter x 1
3.USB charger x 1
4.alligator clips x 1
5.Coil Master 521 Tab Instruction x 1
6.Coil Master Security Card x 1

Weight 0.4 kg

Review By Mike Vapes

Review By Robert Ellis

Review By KJ Andy-O

Review By Richard Ng

Review By Vaping Biker

Review By DampfGeek

Review By Mihey Medvedev

Dan The Vape Man Reviews

Coil Master only sells Coil Master products.


Coil Master offers FREE worldwide shipping on all orders,free DHL shipping on orders over $150!

Delivery time: we will use China EMS (ePacket) for these countries(US, Canada, UK, Germany, France, Italy, Russia, Ukraine, Norway), normally take 7-15 business days,and others use Singapore post that will take 15-20 business days.All orders will be shipped from China.

30-Day Money-Back Guarantee for any reason

For 30 days after the date of purchase, return your undamaged Coil Master product and receive a full refund for ANY reason.

After-sales Support

1.For orders purchased from www.coil-master.net please provide the order number and the photos or a short video about the issue that you want to solve about the products of Coil Master.

2.For products buy from local shop or other resellers, please contact the one you buy your products from and ask them for help.

3.For resellers, please contact the wholesale agent that you’re talking with and supply the photos and short videos with the broken Coil Master products.

Free user support

Contact our world-class, friendly support team for quick solutions. sale@coil-master.net

12 thoughts on “Coil Master 521 Tab

  1. Richard

    I’ve been waiting for the 521 Tab to arrive and it came today. It’s very stable and provides a great platform to build on. It’s also very convenient. Checking the ohm, firing the coil and wicking, all without removing the RDA or RBA until it’s ready to vape. That’s right, no switiching it from build stand, then to mod, then to ohm reader and back again to the mod… Best investment I have made in the hobby. Get yourself one, You’ll love it!

  2. jhzaglanis

    I received my Coil Master very quickly!! I was inpressed!! I haven’t used it that much, 2 -3 coils but it works great!
    Sturdy build & with the battery installed, it’s great as a building deck.
    Thanks Coil Master

  3. Brett

    Bought from a reseller this is a great product I love this thing. on problem is the bottom comes off way to easy use stronger magnets. Great thought worth every penny.

  4. Mark

    I have had my Coil Master 521 Tab for a month maybe 6 weeks now, I don’t build as many coils as I used to, however I still have half a dozen RDAs that I use on a regular basis. When I need to or even if I’m just rewicking one of my drippers, I’ll put it on my 521 Tab and go to work doing what needs to be done. When I do have to build a couple of coils I get my Coil Master coiler v3 and build my coils, insert them on which ever RDA it is I’, working on and its a done deal. the 521 Tab makes building your coils getting them on your atty and getting the new coils burnt in all on one little device! tell everyone about the 521 Tab, if you are using a coiler of any kind, even a 2 mm screwdriver, get one of these 521 Tab’s, it will make using your RDA’s a hell of a lot simpler….NO JOKE this is by far the most accurate ohm reader add into the fact that you can pre burn your new coils, after which you can wick and prime your atty,after which you can connect your mech mod and put your top cap on and take a hit! Pretty cool stuff……like the microwave…how did we ever survive before we had one?

  5. George

    Wonderful product. quality made. works well for building deck, and i also use it as a table vape at times 🙂 don’t settle for the ordinary Ohm readers.- take it to the next level with the 521 tab . ΩΩΩ

  6. Samuel Braun

    I loved this device until i over heated it trying to get a set of nickle coils to heat evenly and i melted some of the more sensitive instruments. Still Love this device.


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