2PCS XT30 and XT60 Smoke Stopper with ShortCircuit Proof Fuses Protects electronics during the first powerup and routine testing of 26S models by limiting current and allowing safe troubleshooting. Key features Compatibility: XT30 and XT60 connectors on both input and output, fits FPV drones and equipment using XT30 or XT60 power leads. Electrical specs: input voltage 725V (26S), hold current 0.7A, trip current 1.2A. Size: 42 x 32 x 11 mm, compact inline module that installs between battery and device. Indicator: LED shows solid green when the circuit is normal. If a fault occurs the LED turns off and the unit starts beeping to signal an abnormal condition. Shortcircuit proof fuse design limits current flow to protect components while you diagnose problems. Benefits Prevents component damage from wiring errors or defective parts by restricting surge current and isolating faults. Makes troubleshooting faster and safer by providing a clear visual and audible fault signal. Simple to use and reusable for bench testing, firsttime powerups, and routine maintenance. Typical applications First powerup of a 26S quad to check wiring and avoid damaging flight controllers, ESCs, or PDBs. Bench testing ESCs, motors, or power distribution boards before full assembly. Field checks when swapping batteries or verifying repairs on FPV drones using XT30 or XT60 connectors. Package and important notes Package includes 2 pieces of XT30 and XT60 Smoke Stopper modules. The Smoke Stopper is a diagnostic and protection tool but will not prevent all wiring errors. Always verify connections with a multimeter before applying full voltage.