YH-600A Pro


The Polywatch YH-600A Pro is a Sleep Study Machine designed to record patient respiratory nasal airflow, snoring, blood oxygen saturation, pulse, and wrist movement during sleep. It can be connected to a CPAP system to record and display continuous positive airway pressure (CPAP). The Polywatch YH-600A Pro Sleep Test Machine is a state-of-the-art sleep study device designed to monitor and assess sleep patterns. The data collected by the device is used to generate a report that can help identify sleep disordered breathing and support a further clinical investigation. This Sleep Study Machine is intended for use both in a hospital or institutional setting (supervised) and in a home environment (unsupervised) for adults.


  • Sleep studies are the tests used to identify sleep disorders.
  • Sleep Screener tracks your brain activity, the amount of oxygen in your blood, your heart rate, your breathing rate, as well as your eye and leg movements during the study.
  • The typical progression for falling asleep starts with Non-Rapid Eye Movement (REM) Sleep.
  • Sleep-related breathing disorders, such as sleep apnea, cause pauses in breathing while sleeping. Multiple episodes of interrupted breathing during the night can significantly disrupt a person's sleep.
  • Periodic Limb Movement Disorder is a condition wherein an individual involuntarily flexes and extends their legs while sleeping. It is sometimes linked to Restless Leg Syndrome.
  • Narcolepsy is an overwhelming condition that causes daytime drowsiness and sudden, unexpected attacks of sleep.
  • REM Sleep Behavior Disorder is a condition where people physically act out their dreams while they are asleep, often resulting in disruptive and potentially dangerous behaviors.
  • Unusual behavior during sleep: It is unusual to exhibit activities during sleep such as walking, moving around, and a lot of rhythmic movements.
  • Chronic insomnia can cause difficulties with falling asleep or staying asleep.
  • At a sleep lab, the following are closely monitored: brain waves, eye movements, heart rate, breathing pattern, blood oxygen level, body position, chest and abdominal movement, limb movement, snoring, and other sounds made during sleep.

Benefits & Specifications

• The performance and functional characteristics of YH-600A Pro include all the user-friendly features of the predicate device.
• YH-600A Pro is powered by one 1.5 V AA battery. Testing was performed to demonstrate that the performance of YH-600A Pro in its intended environment is as safe and effective as that of the legally marketed predicate devices.
• The safety and effectiveness of the YH-600A Pro were verified through performance-related testing that consisted of Electrical Safety, Electromagnetic Compatibility, Mechanical and Environment Testing.
• The recorded data, such as SpO2, pulse rate, airflow waveform, snore and CPAP pressure, can be replayed on a computer via the PolyLogic Analysis Software which is provided with YH-600A Pro.
• The Sleep Screener can be used as a standalone unit for recording data. It can also interact with a commercially available IEC60950-1 compliant computer, which can be used to review data.
• The Sleep Screener does not have any audible alarms, and therefore, should not be used for continuous monitoring.
• The patient is an intended operator, who can safely use all functions and can perform all maintenances mentioned in the User Manual.
• All parts of the device are applied parts
• Polywatch YH-600A can be used in hospitals and families to meet different application scenarios.
• The device is light, easy to wear, has friendly human-computer interaction and a real-time screen displays of waveforms and parameters.
• Professional analysis software, with cross-platform data compatibility, can generate diagnostic reports for clinical reading. Portable design meets the mobility requirement.
• Its simplicity and lightweight features give you a better sleep care. It multiple parameters detection will provide you reliable and monitory data.
• Automatic sleep indentify and CSA detection gives a accurate diagnosis


SpO2 Range Accuracy

0% ~ 100% ≤ ±3% (70% ~ 85%), ≤ ±2% (85% ~ 100%)

Pulse rate Range Accuracy

30 ~ 250 bpm ≤ 2 bpm (30 ~ 100 bpm) ≤ 2% (100 ~ 250 bpm)




660 nanometers

905 nanometers

Maximal Optical Output Power

Less than 2 mw maximum average

Airflow waveform


 Margin of error


10 ~ 40 times per minute

≤ ±1 time

CPAP pressure


Margin of error


4 ~ 20 hPa

≤ ±1 hPa


150 ~ 300 Hz

Wrist movement (sleep / wake)

Automatic sleep-wake identification from wrist movement



 Storage /



5°C ~ 35°C

-20°C ~ 55°C



Storage /



≤ 80% (non-condensing)

≤ 93% (non-condensing)

Atmospheric pressure


 Storage /



860 ~ 1060 hPa

700 ~ 1060 hPa

Power supply

DC 1.5 V ±0.15 V (1 ×1.5 V LR6 AA)

Minimum record duration

No less than 8 hours

Data storage

64 records can be stored on TF card


78 mm × 60 mm × 21 mm (main device)


75 g (main device with battery)

Type of protection against electrical shocks

Internal power supply

Classification of protection against electrical shocks

Type BF applied part

Waterproof rating


Working mode

Continuous operation


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