HGLRC Soter 5V FPV Drone Buzzer with LED – Lost Model Beeper Finder

The HGLRC Soter Buzzer is a compact, lightweight lost‑model finder designed to help pilots quickly locate their FPV drone after a crash or power failure. With a powerful 100 dB alarm, bright LED flash, and built‑in backup power, the Soter continues to beep even if the main battery becomes disconnected. Compatible with all Betaflight and Cleanflight flight controllers, it installs easily and provides reliable protection for freestyle, long‑range, and racing drones.

Key Features

• 100 dB loud alarm for easy drone recovery
• Built‑in LED flash for improved visibility
• Backup power system allows beeping even after main battery disconnect
• Three operating modes including long‑duration alarm
• Auto‑charge function when connected to FC
• Fully compatible with Betaflight & Cleanflight
• Ultra‑compact & lightweight (only 3.6 g)

Specifications

Operating Modes

1. Standard Buzzer Mode
   Works like a traditional buzzer, synchronized with the flight controller.

2. Power‑Loss Alarm Mode
   If the main battery disconnects during a crash, the Soter triggers a 100 dB alarm after 30 seconds, with LED flashing.

3. Long‑Time Alarm Mode (Optional)
   Can be enabled by resoldering pads.
   After 30 minutes of power‑on, the buzzer automatically emits a 100 dB alarm with LED flash.

4. Manual Shutdown
   Press and hold the release button for 5+ seconds to stop the alarm and LED.

5. Auto‑Charging Function
   When wired correctly, the flight controller automatically charges the Soter’s internal backup battery.

   • Red LED flashing: charging
   • Red LED off: fully charged

Package Includes

• 1 × HGLRC Soter FPV Drone Alarm Buzzer (5V)