The Coil Master 521 mini V2 is a handy compact device for all vapers, powered by a single 18650 cell. It is a multi-functional device that acts as an ohm meter, voltage drop checker, rebuilding station and firing test station. The 521 mini V2 is able to measure the resistance down to 0.05 ohm, and dry fire your coils down to 0.1 ohm as well.
Reverse battery protection and short circuit protection are also built in for safety.
Coil rebuilding deck
Reverse battery protection
Short circuit protection
Battery output voltage testing
PCB Heat protection
Resistance Measuring Range: 0.05 - 9.9 ohm (Error ± 0.05 ohm)
Resistance rate: 0.1 ohm
Connection: 510 threaded with spring loaded pin
Battery: Single 18650 battery driven (Battery is not included)
Dimension: 80 mm x 80 mm x 28 mm
Weight: 80 g
Housing material: ABS