Overview

BMH05108 is an open eight-electrode body composition analysis module for body composition analyzers, health management and commercial body-measurement equipment. Its accuracy is benchmarked against hospital-grade professional body composition analyzers, reaching 0.98 correlation with the clinical gold standard DEXA. With 3–300kg weighing and 5–800Ω impedance, its built-in algorithm outputs about 58 professional body composition metrics; UART/USB/BLE interfaces plus iOS/Android/Web APIs lower the development barrier, with typical operating current of just 21mA. It has already helped multiple manufacturers obtain NMPA Class II medical device registration.

Related reading: Real-world Validation vs Hospital DEXA and Professional BIA Devices | Body Composition Accuracy Validation Methodology (DEXA Comparison)

Features

  • Eight-electrode AC dual-frequency measurement; 3–300kg weighing, 5–800Ω impedance
  • Outputs about 58 professional body composition metrics (Body270 algorithm)
  • Accuracy benchmarked against hospital-grade analyzers; 0.98 correlation with the clinical gold standard DEXA
  • Already helped multiple manufacturers obtain NMPA Class II medical device registration; module is RoHS-compliant
  • UART/USB/BLE interfaces + iOS/Android/Web API, prototype validation as fast as same day
  • Ultra-low power: 21mA typical, 1μA sleep

Technical Specifications

Specification Table

Electrode Configuration
Eight-electrode AC dual-frequency + optional four-electrode
Excitation Frequency
20 / 100 dual-frequency kHz
Body Composition Accuracy
0.98 correlation vs DEXA correlation
Output Metrics
~58 (Body270) items
Interface
UART (5V/3.3V) / USB-C / BLE (optional), IAP
Certification
CFDA-ready; RoHS; helped customers obtain NMPA Class II
Weight Range
3–300 (accuracy 10g/50g) kg
Impedance Range
5–800 (accuracy ±1Ω/1%) Ω
Output Metrics Detail
Whole body: water mass, fat mass, protein mass, muscle mass, skeletal muscle mass, mineral mass, bone mass, fat-free mass, intra-/extracellular water, body cell mass, subcutaneous fat mass Five segments (left/right arm, left/right leg, trunk): fat mass, fat percentage, muscle mass Obesity analysis: BMI, body fat %, visceral fat level, obesity degree, BMR, subcutaneous fat %, waist-hip ratio, muscle % Assessment: body type (9 types), body score, body age, standard/ideal weight, fat/muscle/weight control, recommended calorie intake, exercise expenditure
Operating Voltage
5–12 V
Operating Current
21 typ / 25 max @5V mA
Sleep Current
1 μA
Operating Temperature
-10–60 ℃
Storage Temperature
-25–85 ℃
Dimensions
72×50 (mounting holes 65.2×41.6 Φ3.1) mm

Application Areas

Medical body composition analyzers, commercial body composition analyzers, health management and check-up devices, fitness and rehabilitation assessment devices

Documents

BMH05108 Datasheet

BMH05108 Module Resources

Resources

BMH05108 Module Resources

Quick Start

BMH05108 Body Composition Analysis Module Resources

BMH05108 is a body composition analysis module for body fat scales, health scales, and body composition analyzers. It provides interfaces for weight, impedance, and built-in body composition algorithm workflows, so customers can validate module communication, calibration, and performance before the host application is fully developed.

Quick Evaluation Flow
  1. Read the BMH05108 Datasheet to confirm the power supply, interfaces, application circuits, communication protocol, and body composition algorithm inputs and outputs.
  2. Complete the module power, communication, weight measurement, and impedance measurement connections according to the datasheet.
  3. Use BMH05108 Calibration and FAQ to complete production calibration or prototype calibration.
  4. To evaluate the module quickly on a PC, install BMH05108 Windows Evaluation Tool, connect the module over USB, send commands, and check module responses in the UI.
  5. For mechanical integration, refer to BMH05108 Mechanical Drawing to confirm the outline, frame, and mounting hole positions.
  6. For compliance records, download BMH05108 RoHS Certification.
Resource Notes
  • BMH05108 Datasheet: shown on the English page. It covers product overview, interfaces, electrical characteristics, weight and impedance characteristics, body composition characteristics, and communication protocol.
  • BMH05108 中文规格书: shown on the Chinese page with the Simplified Chinese datasheet.
  • BMH05108 Calibration and FAQ: explains calibration flow and common questions.
  • BMH05108 Mechanical Drawing: DXF mechanical drawing shared by all language pages.
  • BMH05108 Windows Evaluation Tool: PC software for quick USB command and response evaluation. It is not included in the complete resource package.
Download Suggestion

For first evaluation, download the BMH05108 Complete Resource Package first, then download the Windows evaluation tool separately. The complete package includes datasheets, calibration and FAQ, mechanical drawing, and certification files for offline review and project handoff.

Contact
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.

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.

Complete Package

BMH05108 Complete Resource Package

BMH05108 Mechanical Drawing

BMH05108 Windows Evaluation Tool

BMH05108 Calibration and FAQ

BMH05108 RoHS Certification

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