JHEMCU Smoke Stopper

A compact safety tool that protects your flight controller and ESC from fire and damage during first power-up. Instantly cuts power if a direct battery short is detected using a self-resetting fuse with LED and buzzer alerts.

Features:

- Prevents damage from direct battery short-circuits

- Self-resetting fuse (auto recovery)

- LED + buzzer fault indication

- Supports XT30 or XT60 (one at a time)

- 2.5A continuous / 3.5A instant trip

- For bench testing only – not for flight

Note: Protects main battery line only (not 5V/12V rails). Do not run motors at full throttle while connected.

Why You Need It!

If you don’t use a multimeter, or even if you do, this protector gives you an instant, foolproof way to confirm that your build has no direct power short before full battery connection. It significantly reduces the risk of destroying electronics and is especially recommended for new FPV pilots.

Ideal For:

- FPV drone assembly

- First power-up testing

- ESC & FC troubleshooting

- Beginners and repair technicians

- 2S–6S+ LiPo drone builds

Specifications:

- Maximum operating voltage: 30V
- Continuous operating current: 2.5A
- Instantaneous protection current: 3.5A