Overview

The BMH05109 is a body composition analysis module from BEST HEALTH. With complete UART and USB interfaces, it can communicate with an external MCU, Android screen or smartphone, etc.

It is suitable for use in applications such as eight-electrode/four-electrode AC body fat and body composition analyzer products.

The module has the features of high accuracy, easy development, convenient connection and IAP upgrade program.

Features

  • Easy to develop: directly read weight and impedance results
  • Communication interfaces: UART, USB
  • IAP upgrade program available
  • Flexible and convenient, able to use its own algorithm, Best Health can also provide IOS, Android, Web API interface to directly obtain about 58 items of body composition data .
  • Multi-frequency eight-electrode solution and single-frequency four-electrode solution, provide high body composition accuracy

Technical Specifications

Performance Specifications

  • Dimension: 72mm * 50mm
  • Operating voltage: 5V~12V

Application Areas

eight-electrode/four-electrode AC body fat and body composition analyzer products

Documents

BMH05109 Datasheet

BMH05109 Module Resources

Resources

BMH05109 Module Resources

Quick Start

BMH05109 Body Composition Module — User Guide

Module Model: BMH05109 Version Date: 2026-05-22

BMH05109 is a body composition measurement module from BestHealth Electronics Inc. (悠健电子(东莞)有限公司). It integrates bioimpedance (BIA) measurement + electronic weight scale + USB host controller, exposing a USB virtual COM port to the host PC. Target applications include body-fat scales and consumer health terminals.

1. Directory Layout
BMH05109/
├── 0.doc/        # Datasheets, PCB 3D model, mechanical drawing
└── 1.AP/         # Windows host AP installer
2. 0.doc — Datasheets and Hardware Interface

Core references for customer selection, mechanical, and hardware design.

FileDescription
BMH05109_datasheet_CN.pdfRequired reading — BMH05109 datasheet (Chinese): pinout, range, accuracy, typical application circuit
BMH05109_datasheet_EN.pdfBMH05109 datasheet (English)
BMH05109_PCB_3D.stepPCB 3D model for mechanical-design reference
BMH05109边框_接口定位.dxfModule outline and connector position (CAD mechanical drawing)
3. 1.AP — Windows Host AP Installer
FileDescription
BMH05109_AP_1.0.1.msiWindows host-side AP installer. After installing, connect the BMH05109 module over USB; the AP reads body-composition, impedance, and weight data — used for bring-up, data capture, and functional verification.
4. Quick Start
  1. Read the datasheet0.doc/BMH05109_datasheet_CN.pdf (or EN) for pinout, electrical characteristics, and typical application circuit.
  2. Mechanical design — reference 0.doc/BMH05109_PCB_3D.step and BMH05109边框_接口定位.dxf for enclosure and locating-hole design.
  3. Install the host AP — install 1.AP/BMH05109_AP_1.0.1.msi on a Windows PC.
  4. Bring up the link — connect BMH05109 over USB; launch the AP to read body-composition, impedance, and weight data.
5. Version & Contact
6. Disclaimer

The materials in this repository — including hardware schematics, PCB files, source code, and documents — are provided solely for customer reference and evaluation. Before using these materials in product design, mass production, or commercial deployment, customers are responsible for conducting full functional testing, reliability validation, and regulatory certification. BestHealth Electronics Inc. (悠健电子(东莞)有限公司) shall not be liable for any direct or indirect losses arising from the customer's use of these materials in production, sale, or operation — including but not limited to yield issues, field failures, product recalls, or end-customer claims. These materials are provided "as is" without warranty of any kind, express or implied.

7. Intellectual Property

All materials in this repository (including but not limited to hardware design files, source code, documents, trademarks, and logos) are the intellectual property of BestHealth Electronics Inc. (悠健电子(东莞)有限公司), protected by applicable laws. Customers are granted only the right to use these materials for reference and evaluation. Reverse engineering, resale, redistribution, or unauthorized public release is prohibited without prior written consent.

© 2026 BestHealth Electronics Inc. (悠健电子(东莞)有限公司) All Rights Reserved.

This README is a directory-level user guide for fast navigation and selection. Refer to the datasheets in 0.doc/ for definitive specifications.

Complete Package

BMH05109 Complete Resource Package

BMH05109 PCB 3D Model

BMH05109 Mechanical Drawing

BMH05109 Windows Evaluation Tool

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