How to Wire a 5V Active Buzzer on an FPV Racing Drone
Solder the two pins of a 5V active buzzer to the buzzer pads on your PDB or flight controller. The board drives the buzzer output, so the buzzer sounds for lost-model beeps and arming tones. The 6-pack buzzer here measures 9 by 5.5 mm, fits tight builds, and costs $7.49 for six.
Quick facts
| Fact | Value |
|---|---|
| Buzzer size | 9 x 5.5 mm |
| Voltage | 5V DC |
| Pack | 6 buzzers for $7.49 |
| Mounting | Two through-hole pins, solder to buzzer pads |
| Use | Lost-model beeps, arming and warning tones |
| Finder option | JHE finder, 100-110dB with backup battery, from $8.97 |
What does an active buzzer do on an FPV quad?
An active buzzer has its own oscillator, so it sounds when the board applies 5V to it.
It needs power only, not a tone signal, which is why it wires to the buzzer pads with two pins.
The buzzer here measures 9 by 5.5 mm and solders straight to the pads on a PDB or flight controller.
Which pads do you solder the buzzer to?
Solder the two pins to the buzzer pads on your PDB or flight controller.
The positive pin goes to the 5V pad and the negative pin goes to ground, so the board can drive the buzzer output.
Check your flight controller manual for the buzzer pad labels before you solder.
How do you test the buzzer after soldering?
Power the board and trigger the beeper from your radio, then listen for the tone.
Betaflight drives the buzzer output for lost-model beeps, arming tones, and warnings.
If the buzzer stays silent, check the solder joints and the pad polarity first.
When is a finder buzzer the better pick?
A finder buzzer keeps beeping after a crash even when the main battery is disconnected.
The JHE finder here sounds a 100 to 110dB alarm and lights a white LED 30 seconds after power loss.
Its backup battery charges while you fly, and the red LED shows it is charging.
The JHE20B costs $8.97, the JHE42B-S costs $9.09, and the JHE42B costs $9.17.
What did we check on the bench?
We checked the listing states 9 by 5.5 mm, 5V, and two through-hole pins for PDB or flight controller pads.
We counted 2 images on the 5V buzzer listing and 6 on the JHE finder listing.
We matched every price in this guide to the live store price on November 11, 2026.
How the options compare
| Buzzer | Sound | Power | After a crash | Price |
|---|---|---|---|---|
| 5V active buzzer 6-pack | Beeps when driven | 5V | Stops with the battery | $7.49 |
| JHE20B finder | 100dB alarm | 5V plus backup battery | Beeps 30 seconds after power loss | $8.97 |
| JHE42B-S finder | 100dB alarm | 5V plus backup battery | Beeps 30 seconds after power loss | $9.09 |
| JHE42B finder | 110dB alarm | 5V plus backup battery | Beeps 30 seconds after power loss | $9.17 |
How do you wire the buzzer in 5 steps?
- Power off the quad and remove the battery.
- Find the buzzer pads on your PDB or flight controller.
- Solder the two pins to the pads, positive to 5V and negative to ground.
- Power the board and trigger the beeper from your radio to check the tone.
- Route the buzzer clear of props and wires, then fly and test the lost-model beep.
Parts that fit this guide
In-stock parts ship from the New York, USA warehouse in 1-2 business days. Prices below are the live store prices we verified on November 11, 2026.
5V Active Buzzer Beeper Tracker, 9 x 5.5mm, for FPV Racing Drone PDB Flight Controller, 6-Pack ($7.49)
5V active buzzer 6-pack at $7.49. It is a 9 by 5.5 mm buzzer with two through-hole pins for PDB or flight controller pads.
JHE Finder Buzzer with LED Alarm, 5V, 100-110dB (JHE20B / JHE42B / JHE42B-S) ($8.97)
JHE finder buzzer from $8.97. It works as a normal flight controller buzzer and sounds a 100 to 110dB alarm with a white LED 30 seconds after power loss.
Related parts: HiLetgo SFM-27 95dB Alarm Buzzer, 3-24V, Continuous Beep, 5-Pack: HiLetgo SFM-27 alarm buzzer, 95dB continuous beep on 3 to 24V..
Shop the full range: FPV Accessories at Quality RC Parts. See also: Related guide.
Frequently asked questions
Does an active buzzer need a signal wire?
No. An active buzzer has its own oscillator and sounds when the board applies 5V. It wires with two pins: power and ground.
Can the buzzer find a downed quad?
Yes. The board drives the buzzer output for lost-model beeps, so you can find a downed quad by ear.
What if the quad loses battery power in a crash?
A normal buzzer stops with the battery. The JHE finder keeps beeping on its backup battery 30 seconds after power loss.
Where do I mount the buzzer?
Solder it to the buzzer pads and route it clear of props and wires. The 9 by 5.5 mm size fits tight builds.
Sources
Last updated: November 11, 2026.