As consumer health monitoring pivots from simple body weight tracking to clinical-grade biometric analytics, professional buyers face new challenges in selecting hardware vendors. This engineering guide addresses core procurement queries regarding BIA accuracy, firmware extensibility, and regulatory compliance.
Traditional consumer scales rely on single-frequency electrical currents (typically 50 kHz) passing through the lower extremities. However, single-frequency measurement is easily skewed by water retention, skin temperature, and daily hydration cycles. Modern procurement tenders increasingly demand Dual-Frequency Bioelectrical Impedance Analysis (BIA)—utilizing low-frequency (5–20 kHz) currents to measure extracellular fluid and high-frequency (100–250 kHz) currents to penetrate cell membranes for intracellular fluid measurement.
This dual-spectrum methodology delivers a DEXA-scan correlation coefficient exceeding R = 0.94, making smart body fat scales viable for clinical research, corporate wellness programs, and premium fitness retail.
Industrial design in smart scales has evolved. While traditional stainless steel electrode pads remain cost-effective, premium brands favor full-surface ITO (Indium Tin Oxide) conductive tempered glass. ITO coating creates an invisible conductive surface, allowing end users to step anywhere on the glass platform without precise foot placement, while enhancing aesthetic appeal and IPX4 splash resistance.
Oaxis provides fully customizable hardware platforms. From turnkey private-label white-label solutions to bespoke ODM PCB layouts and industrial enclosures, explore our ready-to-ship and custom scale architectures.
Equipped with 4 high-precision G-shape strain-gauge sensors and ITO tempered glass. Measures 8 core metrics: weight, body fat %, muscle mass, visceral fat, bone mass, BMR, hydration, and BMI. Dual-mode BLE 5.0 and Wi-Fi sync.
Designed for medical centers and athletic performance brands. Uses a retractable handlebar with 4 hand electrodes + 4 foot electrodes to conduct segmental body composition analysis (left/right arms, legs, and trunk independently).
Ultra-slim 18mm profile featuring stainless steel electrode plates, high-contrast reverse VA display, and instant step-on auto-calibration. Engineered for aggressive price-point distribution without sacrificing sensor reliability.
Compare key engineering parameters across Oaxis smart body fat scale tiers to select the optimal hardware specification for your retail or enterprise deployment.
| Hardware Feature | Tenvis Slim Lite (Entry OEM) | Tenvis Standard (Flagship OEM) | Tenvis Pro (Clinical ODM) |
|---|---|---|---|
| BIA Measurement Technique | Single-Frequency (50 kHz) | Dual-Frequency (20 kHz / 100 kHz) | Multi-Frequency Segmental (5/50/250 kHz) |
| Electrode Interface | 304 Stainless Steel Plates | Full-Surface ITO Tempered Glass | ITO Glass + Retractable 4-Point Handle |
| Load Cell Calibration | High-Precision Strain Gauge (±100g) | 24-Bit ADC G-Sensors (±50g) | Industrial High-Sensitivity Sensor (±20g) |
| Connectivity & Wireless | BLE 5.0 Low Energy | BLE 5.3 + 2.4GHz Wi-Fi Auto-Sync | BLE 5.3 + Wi-Fi + Cellular IoT (Optional) |
| Biometric Parameters Measured | 6 Metrics (Weight, Fat, BMI, Water, Muscle, Bone) | 13 Metrics (Visceral Fat, BMR, Metabolic Age, etc.) | 24 Segmental Metrics (Torso, Arm, Leg Breakdown) |
| App Integration & SDK | Standard BLE GATT Profile | Custom SDK (iOS/Android/Flutter/React) | Full Telehealth Cloud API & Direct Webhooks |
| Power Source | 4 × AAA Batteries (12-mo life) | Rechargeable Li-ion (USB-C Type) | Rechargeable Li-ion + Smart Power Mgmt |
| Minimum Order Quantity (MOQ) | 1,000 Units | 1,000 Units | 3,000 Units (Custom Tooling) |
The global smart scale market is expanding beyond fitness enthusiast demographics into corporate health programs, remote patient monitoring (RPM), and insurer-sponsored preventative health initiatives. Sourcing directors must align their product roadmaps with key emerging trends:
Every Oaxis smart body fat scale undergoes rigorous automated weight matrix calibration and multi-frequency BIA verification before entering final cartoning. Our factory operations adhere strictly to ISO9001 and ISO13485 quality systems.
Since founding in Singapore in 2011, Oaxis has established a track record of innovation recognized by top international design bodies including the iF Design Award (2014, 2015, 2016) and Computex d&i Awards. When sourcing smart body fat scales, our B2B partners benefit from:
Here is what leading electronics buyers and health tech brand managers say about partnering with Oaxis for smart scale manufacturing.
★★★★★“Oaxis integrated custom dual-frequency BIA algorithms into our white-label scale in less than 40 days. The Bluetooth SDK was straightforward for our app developers, and batch consistency across 20,000 units was flawless.”
VP of Product SourcingEU Consumer Health Brand
★★★★★“The full-surface ITO glass scale platform provided an instant premium uplift to our product lineup. Their engineering team handled TELEC and MIC certifications for our Japanese retail deployment seamlessly.”
General ManagerTokyo Electronics Retailer
★★★★★“Hardware reliability is vital for our remote patient monitoring service. The Oaxis smart scale platform’s Wi-Fi auto-sync feature eliminated patient connectivity setup issues entirely. Highly recommended OEM vendor.”
Chief Technology OfficerUS Telehealth Provider
Oaxis products and engineered OEM solutions are distributed through leading international consumer channels and retail groups across 30+ countries.
Detailed answers to technical, commercial, and logistical questions regularly raised during OEM/ODM contract negotiations.
BIA sends a safe, micro-amp electrical current through the body. Because lean muscle mass contains a high percentage of water and electrolytes, it conducts electricity efficiently with low resistance (impedance). Body fat tissue contains significantly lower hydration and acts as a resistor. By measuring the electrical impedance alongside user inputs (height, age, biological sex), our embedded MCU algorithm calculates body fat, total body water, skeletal muscle mass, and visceral fat using validated regression equations correlated against DEXA scans.
Get a Quote for detailed engineering whitepapers on our algorithm validation.
A 4-electrode scale measures impedance strictly through the foot-to-foot circuit (lower limbs) and estimates upper body composition based on statistical averages. An 8-electrode scale incorporates a retractable hand bar containing 4 additional contact points. This creates five distinct electrical circuits (left arm, right arm, torso, left leg, right leg), eliminating mathematical estimation bias and enabling localized muscle and fat distribution analysis for professional sports medicine and clinical applications.
Yes. We offer fully branded companion applications (iOS and Android) skinned with your logo, color palette, domain endpoints, and localized language files. Alternatively, if you operate an existing mobile app, we provide ready-to-integrate software development kits (SDKs) and GATT communication documentation for native iOS (Swift), Android (Kotlin), Flutter, and React Native platforms.
Our baseline smart scale models carry CE, FCC, RoHS, REACH, and Bluetooth SIG certifications. Furthermore, as an experienced OEM/ODM provider, we routinely arrange and pass region-specific compliance testing including UKCA (United Kingdom), TELEC/MIC (Japan), KC (South Korea), NCC (Taiwan), and FDA Class I registration where applicable for medical wellness devices.
Our OEM services include customized logo printing on glass surfaces and housing chassis, bespoke gift-box structural design and printing, customized bottom casing colors, private-label user manuals, custom Bluetooth pairing names, custom LED/LCD display backlight colors, and tailored firmware startup banners on TFT models.
We utilize high-rigidity manganese steel G-sensors calibrated on automated robot test benches using certified standard test weights. Each scale undergoes a 10,000-cycle dynamic stress endurance test during factory sampling, with individual temperature-compensation resistors built into the sensor bridge to ensure accurate readings from 5°C to 40°C.
Standard OEM repeat orders ship within 25–35 days after final artwork sign-off and deposit receipt. Initial orders requiring customized packaging proofing, sample sign-off, or custom BLE firmware parameterization require approximately 35–40 days. Complete ODM tooling projects take 45–60 days from CAD approval to golden sample production.
Get a Quote to receive a project-specific timeline and price matrix.
Yes. Both our turnkey white-label companion apps and software SDKs include pre-built synchronization bridges for Apple HealthKit, Google Fit (Health Connect), Fitbit App, and Garmin Connect APIs, allowing end users to centralize their body composition measurements automatically.
A transparent engineering and manufacturing workflow designed to mitigate risk and guarantee on-time delivery for brand partners.
We analyze your hardware requirements, sensor accuracy tier, connectivity protocol (BLE/Wi-Fi/Cellular), and packaging target to provide a transparent BOM quotation.
We assemble working hardware prototypes, flash custom BLE pairing parameters, release app SDK documentation, and ship pre-production samples for client approval.
Regulatory certification testing (CE/FCC/RoHS) is initiated alongside silk-screen printing, customized box sampling, and golden sample sign-off.
SMT component placement, automated BIA calibration, 100% electrical burn-in testing, dynamic weight testing, and final AQL 0.65 Level II inspection.
FOB/CIF freight dispatch, ongoing app store compliance updates, OS patch maintenance, and 12-month hardware warranty backing with spare parts program.
Submit your target volume, required sensor specs, and destination market to receive a feasibility evaluation and custom price quotation within 24 hours.
Oaxis hardware engineering and industrial design have been recognized globally by elite industry juries, providing external validation for your supply base.
Partner with an established hardware vendor capable of delivering precision bio-impedance technology, custom software SDKs, and full regulatory compliance. Contact our B2B OEM engineering team today.