Portable sleep diagnostics
The YH-S900B and YH-S900C are designed to support portable sleep diagnostics in clinical and home environments while maintaining a compact, wearable configuration.
Portable Sleep Diagnostics
Clinical Sleep Monitoring for Healthcare Professionals (Without Unnecessary Cable Constraints)
The PolyWatch YH-S900B and YH-S900C collect multi-parameter sleep data through wearable systems designed for clinical and home monitoring.
Wrist-worn touchscreen
Wireless transmission
At least 16 hours monitoring
What Is a Clinical Sleep Monitoring System? (Quick Definition)
A clinical sleep monitoring system records multiple physiological and environmental signals during sleep, helping qualified healthcare professionals review respiratory and related sleep data. BMC Medical’s PolyWatch YH-S900B and YH-S900C are portable sleep diagnostic systems for adults and children aged six years and above who weigh at least 20 kg, subject to confirmation in the current instructions for use. The systems support airflow, respiratory effort, oxygen, pulse, position, movement, snoring, and CPAP pressure monitoring in clinical and home environments.
They are designed for clinical sleep monitoring, not as consumer sleep trackers or independent diagnostic tools. Monitoring data should be interpreted by a qualified healthcare professional.
Portable Systems for Multi-Parameter Sleep Assessment
Respiratory and sleep-related signals
Both systems monitor airflow, chest and abdominal breathing, blood oxygen, pulse, snoring, position, movement, ambient light, and CPAP pressure. Their data can support sleep-related respiratory assessment when reviewed by an appropriate professional.
Wearable clinical workflow
A dual-host configuration distributes equipment weight, while a wrist-worn color touchscreen, swipe navigation, adjustable brightness, and left- or right-hand wearing settings support practical operation.
Clinical sleep-laboratory compatibility
BMC Medical’s related 5+ Series masks are presented for fitting during titration and overnight PSG studies. F5A+, F5+, and N5+ models include clinical-oriented features such as distributed venting and multiple cushion sizes on applicable models.
Explore sleep-laboratory mask optionsWhat You Get (Key Benefits)
Monitor multiple respiratory, cardiovascular, movement, and environmental parameters in one sleep study.
Reduce cable constraints through wireless transmission and a wearable dual-host configuration.
Capture thoracic and abdominal respiratory activity using respiratory inductance plethysmography technology.
Support extended monitoring with a built-in lithium battery; the brochure states that two hours of charging supports at least 16 hours of continuous monitoring.
Adapt the wearable experience with adjustable brightness and left- or right-hand wearing settings.
Review monitoring information with professional interpretation rather than relying on an unvalidated consumer-tracking workflow.
How It Works
1
Prepare the system
A qualified professional selects and prepares the applicable YH-S900B or YH-S900C configuration for the intended monitoring session.
What the user sees: A wearable host, belts, sensors, and monitoring accessories.2
Record during sleep
The system records airflow, respiratory effort, oxygen, pulse, position, movement, snoring, and other supported signals.
What the user sees: A wrist-worn color touchscreen and status light.3
Review with expertise
A qualified healthcare professional reviews and interprets the recorded information in the appropriate clinical context.
What the user sees: Recorded monitoring data ready for professional review.Features (Grouped)
Core workflow features
- Portable sleep monitoring for clinical and home environments
- Multi-parameter recording for respiratory and sleep-related signals
- Two chest and abdominal belts for respiratory effort monitoring
- Wrist-worn color touchscreen with swipe navigation
- CPAP pressure monitoring among supported parameters
Reliability & control
- Medical-grade sensors and high-precision algorithms
- Respiratory inductance plethysmography technology
- Metal Luer connector designed to help reduce tube breakage or detachment risk
- Built-in lithium battery
- Hidden breathing light for device-status indication
Integrations & export
- Bluetooth transmission on YH-S900B
- Bluetooth and WiFi transmission on YH-S900C
- Five-lead ECG on YH-S900C
- Local data reading supported in the series
- Configuration-specific connectivity should be confirmed before procurement
Proof (Results / Social Proof)
- Two hours of charging supports at least 16 hours of continuous monitoring according to the product brochure.
- The YH-S900B and YH-S900C support monitoring of airflow, respiratory effort, oxygen, pulse, snoring, position, movement, ambient light, and CPAP pressure.
- The product brochure states that the system won a 2026 iF Industrial Design Award; award-category wording should be confirmed before publication.
- YH-S900C adds five-lead ECG and WiFi transmission to the capabilities listed for YH-S900B.
- BMC Medical has participated in respiratory healthcare for more than 20 years and serves healthcare professionals, partners, and patients in more than 140 countries and regions.
“The system supports comfortable wearing, convenient operation, high-precision monitoring, functional flexibility, and a compact design.”
Comparison (Why BMC Medical vs Alternatives)
| Decision factor | BMC Medical YH-S900 Series | Generic Alternative A | Generic Alternative B |
|---|---|---|---|
| Wireless transmission | Bluetooth; YH-S900C also supports WiFi | Not specified in source | Not specified in source |
| ECG capability | Five-lead ECG on YH-S900C | Not specified in source | Not specified in source |
| Respiratory effort | Chest and abdominal belts using RIP technology | Not specified in source | Not specified in source |
| Monitoring duration | At least 16 hours after two hours of charging, per brochure | Not specified in source | Not specified in source |
| Intended context | Clinical and home sleep monitoring | Not specified in source | Not specified in source |
The generic columns are included only as a decision framework. No competitor specifications are asserted because they were not provided.
Credentials & Key Stats
20+
Years of respiratory healthcare industry experience
140+
Countries and regions where products are trusted
3M+
PAP devices sold globally
942
Global patents reported by BMC Medical
BMC Medical’s broader respiratory portfolio includes sleep diagnostic systems, home non-invasive ventilation devices, masks, oxygen concentrators, high-flow respiratory therapy devices, and the PAP Link digital health platform.
FAQs
Which clinical sleep monitoring system should I choose: YH-S900B or YH-S900C? +
The YH-S900B and YH-S900C share the listed multi-parameter sleep monitoring capabilities. YH-S900C is the model specified with five-lead ECG and WiFi transmission, while YH-S900B is specified with Bluetooth transmission. A qualified healthcare professional or authorized BMC Medical representative should confirm the appropriate configuration for the intended workflow and market.
How is the system set up for a sleep study? +
The system uses wearable hosts, respiratory belts, and supported sensors to collect signals during sleep. Its wrist-worn color touchscreen provides device interaction, and the dual-host configuration distributes equipment weight. Setup should follow the current official instructions for use and the procedures of the responsible healthcare provider.
What data does the PolyWatch system monitor? +
Both systems support pressure airflow, airflow waveform, pressure snoring, chest breathing, abdominal breathing, blood oxygen, pulse rate, pulse wave, ambient light, position, body movement, and CPAP pressure. YH-S900C additionally includes five-lead ECG according to the supplied product information. The recorded information requires professional interpretation and should not be treated as an independent diagnosis.
Can the system be used for children? +
The supplied product information identifies adults and children aged six years and above who weigh at least 20 kg as intended users. The exact intended-use wording must be confirmed in the current instructions for use before clinical application. Do not assume suitability for children below the stated age or weight criteria.
Does the system independently diagnose sleep apnea or another condition? +
No independent diagnosis claim should be made for this system. It records supported physiological and environmental parameters for review, while diagnosis and clinical interpretation belong to a qualified healthcare professional. The system should not be described as a consumer sleep tracker.
How can I confirm availability, pricing, and support? +
Pricing, availability, configurations, accessories, and connectivity options may vary by country or region. Contact BMC Medical or an authorized local distributor for current product information and support. BMC Medical can be reached at intl@bmc-medical.com or +86-10-5166 3880, and its service resources are available through the medical device support page.
Bring More Practical Insight to Sleep Monitoring
Review the PolyWatch YH-S900B and YH-S900C with BMC Medical or an authorized local distributor before selecting a configuration.