iFlight 100dB Lost Drone Buzzer Finder YR50B_S

The iFlight YR50B_S is a self-powered lost model alarm designed to help you locate downed FPV drones, even if the main LiPo is ejected during a severe crash. Weighing just 4 grams, it is a critical recovery tool for everything from freestyle quads to long-range rigs flying over dense brush or tall grass.

Key features

• Independent power: Triggers a 100 dB alarm and flashes a high-visibility LED when main drone power is abruptly cut.
• Auto-charging: Replenishes its onboard battery via the flight controller's 5V line during regular flight.
• Dual purpose: Functions as a standard Betaflight status and warning buzzer when the drone is powered normally.
• Quick silence: Features an integrated push-button to easily disarm the alarm after you recover the quad.

Specifications

• Model: YR50B_S
• Alarm volume: 100 dB
• Dimensions: 18 x 17 x 15 mm
• Weight: 4 g
• Wiring: 5V, GND, BUZ- (Buzzer Negative)

Installation requires soldering three wires directly to your flight controller's standard buzzer pads, making it compatible with Betaflight, INAV, and ArduPilot systems. To manually silence the alarm after retrieving your drone or finishing a flight, simply press and hold the onboard button for two seconds.