JHEMCU JHE42B Finder BB 110dB Buzzer Alarm with LED Backup for Betaflight/Cleanflight/iNAV FC

Overview

The JHEMCU JHE42B Finder BB is a buzzer alarm with LED light for FPV/multirotor flight controllers. It supports traditional active-buzzer functions synchronized with the flight controller, and it can continue to emit an alarm after the main battery is disconnected (when installed and wired correctly).

Key Features

• Two operating modes:
  • Works like a traditional active buzzer synchronized with the flight controller
  • When the flight controller is normally connected and the main battery is powered off during flight, it automatically emits a 110 dB beeping sound after 30 seconds of power failure; the LED emits white light
• Alarm cancel: press and hold the release button for more than 2 seconds to turn off the sound
• Flight controller compatibility: compatible with Betaflight (BF), Cleanflight (CF), and INAV; connects to the flight controller buzzer interface
• Charging indication (when powered by the flight controller): red LED on = charging in progress; red LED off = fully charged; red LED flashing = flight controller powered off (wait 30 seconds)

Specifications

For installation or wiring assistance, contact https://rcdrone.top/ or email [email protected].

What's Included

• JHE42B Finder x 1 PCS
• 3P*1.0MM line x 1 PCS

Connection Notes

• Connect to the flight controller buzzer pads/port: GND, +5V, BZ-.
• Connection schematic reference (as labeled): Cleanflight/Betaflight F3/F4/F7 flight controllers: GND, +5V, BZ- to JHE42B Finder GND, +5V, BZ-.

Details

Loud 110 dB finder buzzer with onboard LED helps locate a downed quad even after a power loss (when wired correctly).

Simple 3-wire hookup to the flight controller buzzer pads: GND, +5V, and BZ-; hold the button to cancel the alarm.

Includes the Finder BB module and a 3-pin lead for quick connection to compatible flight controllers.

Works with Betaflight, Cleanflight, and iNAV by connecting to the standard buzzer interface pins.