iFlight YR50B_S Self-Powered Finder Buzzer with LED

Never Lose Your Drone Again!

The iFlight YR50B_S Finder Buzzer is an essential piece of safety equipment for any FPV pilot. Unlike standard buzzers that rely on your main flight battery, this smart buzzer has its own integrated battery. This means that even if your LiPo is ejected during a crash—a common and frustrating occurrence—the YR50B_S will automatically activate, helping you locate your downed quad with its piercingly loud 100dB alarm and a bright, flashing LED light.

It's lightweight, compact, and easy to install on any FPV drone, connecting to your flight controller just like a traditional buzzer. It charges automatically while your drone is powered on and lies dormant until it's needed most.

Key Features:

• Self-Powered: Built-in 50mAh battery allows the buzzer to work independently of the main flight battery.
• Extremely Loud: Emits a powerful 100dB sound, making it easy to hear from a distance, even in noisy environments or tall grass.
• Bright LED Strobe: A high-intensity LED flashes alongside the alarm, providing a crucial visual aid for locating your drone, especially at dusk or in low-light conditions.
• Dual Operation Modes: Functions as a standard buzzer controlled by your transmitter and automatically triggers its alarm 30-60 seconds after the main power is lost.
• Easy Disarm: To turn off the alarm after finding your drone, simply power cycle it by connecting and disconnecting a main flight battery for 2-3 seconds.

Specifications:

• Model: YR50B_S
• Volume: Up to 100dB
• Internal Battery: 3.7V 50mAh LiPo
• Input Voltage: 4.5 - 5.5V
• Working Time: Up to 4 hours
• Charging Time: Approximately 1.5 hours
• Size (L x W x H): 18mm x 17mm x 15mm
• Weight: 4.0g

How It Works:

1. Connect the YR50B_S to your flight controller's 5V, GND, and Buzzer- pads.
2. While your drone is powered by the main LiPo, the internal battery of the buzzer will charge.
3. If you crash and the main LiPo is disconnected, the buzzer will wait for 30-60 seconds and then automatically enter alarm mode, beeping loudly and flashing its LED.
4. Once you find your drone, connect a main battery for 2-3 seconds and then disconnect it. The buzzer will recognize the power cycle and disarm itself.