YH-600B Pro


The Polywatch YH-600B Pro Sleep Test Machine is a sophisticated device designed to track and evaluate sleep patterns. It measures various physiological parameters during sleep, such as patient respiratory nasal airflow, snoring, blood oxygen saturation, pulse, respiratory effort, body position and wrist movement during sleep. Additionally, it can be connected to a CPAP system to measure and display CPAP levels. Polywatch YH-600B Pro sleep study machine can be used in both supervised hospital or institutional settings and unsupervised home environments for adults, and the data it produces can be used to identify sleep-disordered breathing and further clinical investigation. This Sleep Apnea Monitoring Device is a lightweight, user-friendly device with interactive human-computer interfaces and real-time displays of waveforms and parameters. It is also equipped with professional analysis software with cross-platform data compatibility, allowing it to create diagnostic reports for clinical review.


  • A sleep study is a diagnostic test used to identify sleep disorders.
  • It records a variety of bodily functions, such as brain activity, oxygen levels in the blood, heart rate, and breathing rate, as well as eye and leg movements, during sleep.
  • A typical sleep pattern begins with a stage of non-rapid eye movement sleep.
  • Sleep apneas and other sleep-related breathing disorders cause breathing to stop and restart intermittently during sleep.
  • Periodic Limb Movement Disorders are characterized by involuntarily flexing and extending the legs while sleeping, and may be associated with Restless Leg Syndrome.
  • Narcolepsy is a condition which can be overwhelming for those who suffer from it, as it causes extreme drowsiness during the day and sudden attacks of sleep.
  • REM Sleep Behavior Disorder: A condition in which a person acts out their dreams while they are asleep, resulting in disruptive and potentially dangerous behavior.
  • Unusual behavior during sleep can manifest in many forms, including walking, moving around, and making a lot of rhythmic movements.
  • Chronic Insomnia: It can be difficult to achieve or maintain a restful sleep.
  • A sleep lab monitors various physiological and environmental characteristics while a person is sleeping, such as Brain waves, Eye movements, Heart rate, Breathing pattern, Blood oxygen level, Body position, Chest and abdominal movement, Limb movement , Snoring and other noise you make as you sleep.

Benefits & Specifications

The performance and functional characteristics of YH-600B Pro include all the user-friendly features of the predicate device. YH-600B Pro is powered by one 1.5 V AA battery. Testing was performed to demonstrate that the performance of YH-600B Pro in its intended environment is as safe and effective as that of the legally marketed predicate devices. The safety and effectiveness of YH-600B Pro have been 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-600B Pro. The device 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 device does not have any audible alarms, and, therefore, should not be used for continuous monitoring. Patient is an intended operator, who can safely use all functions and can perform all maintenances






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

Pulse rate



30 ~ 250 bpm

 ≤2 bpm (30 ~ 100 bpm)

≤2% (100 bpm ~ 250 bpm)





663 nanometers

890 nanometers

Maximal Optical Output Power

Less than 1.5mw 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

Thorax/Abdomen effort Range Margin of error

10 ~ 40 times per minute

 ≤±3 times per minute

Body position

Supine position, sleep on left or right side, and prone positons can be detected

Wrist movement (sleep / awake)

Automatic sleep-awake identification from wrist movement






5°C ~ 35°C

-20°C ~ 55°C




Transportat ion

≤80% (non-condensing)


 ≤93% (non-condensing)

Atmospheric pressure



Transportat ion


860 ~ 1,060 hPa

700 ~ 1,060 hPa

Power supply

DC 1.5 V ±0.15 V(1×1.5 V R6 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 without 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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