Overview of Alice 6 Thermistor Airflow Sensor
The Alice 6 thermistor nasal/oral airflow sensor is an authentic, clinical-grade diagnostic interface engineered specifically for the Philips Respironics Alice 6 sleep diagnostic system. Featuring a dedicated 2-pin keyhole connector (249 connector interface), this single-channel adult airflow sensor provides precise temperature-differential detection of qualitative respiratory airflow during clinical polysomnography (PSG) and diagnostic sleep apnea evaluations. As a vital component for any modern sleep laboratory, this Alice 6 thermistor ensures high-fidelity data collection while maximizing patient comfort during overnight studies.
Key Features & Clinical Benefits
- Dual Oral-Nasal Flow Detection: Captures both nasal breathing and mouth exhalations simultaneously. This ensures reliable detection of hypopneas, apneas, and flow limitations.
- Fast Thermal Response: High-sensitivity thermal elements respond rapidly to temperature changes between inhaled room air and exhaled body-temperature airflow.
- Secure 2-Pin Keyhole Interface: Designed with a dedicated 249 connector configuration for a snug, noise-free fit directly into Alice 6 headbox modules (LDxS or LDxN).
- Patient Comfort & Stability: The lightweight prongs and flexible contouring allow for easy positioning under the nose and over the mouth.
- Reusable & Cost-Effective: Constructed from durable, medical-grade materials, the Alice 6 thermistor is engineered for repeated clinical use, offering significant long-term value and waste reduction compared to disposable alternatives.
Advanced Thermal Detection Technology
At the core of the Alice 6 thermistor is an advanced heat-sensitive detection matrix. The sensor utilizes three strategically placed thermistor elements—two directed toward the nares and one extending toward the oral cavity. By converting subtle thermal fluctuations into a stable analog electrical voltage, the Alice 6 thermistor delivers a robust signal that is directly proportional to the patient’s respiratory airflow.
Seamless Integration and Workflow Efficiency
In a busy sleep center, setup time and signal reliability are paramount. This Alice 6 thermistor is tailor-made to integrate flawlessly with the Philips Respironics Alice 6 diagnostic sleep system. By bypassing intermediate interface modules, the sensor minimizes signal degradation. For technicians looking to stock up on related supplies, you can browse all our compatible Alice 6 accessories directly in our shop.
Diagnostic Applications in Polysomnography
Accurate airflow monitoring is a cornerstone of clinical sleep medicine. The Alice 6 thermistor is indispensable for diagnosing a wide spectrum of sleep-disordered breathing conditions. It provides the precise qualitative airflow data required by standard clinical scoring guidelines for the accurate identification of apneas.
Care, Maintenance & Durability
Designed with the rigorous daily demands of a hospital sleep lab in mind, the sensor boasts a resilient thermoplastic elastomer (TPE) center. Proper care significantly extends the lifespan of the Alice 6 thermistor, maximizing your laboratory’s return on investment. If you have questions about maintenance or need setup support, feel free to contact our New Delhi headquarters.
Compliance with AASM Clinical Guidelines
For sleep laboratories striving to maintain accreditation and deliver the highest standard of patient care, adherence to standard scoring manuals is non-negotiable. The American Academy of Sleep Medicine (AASM) recommends using an oronasal thermal airflow sensor—just like the Alice 6 thermistor—as the primary sensor for detecting and scoring the absence of airflow (apneas) during an adult polysomnogram. While nasal pressure transducers are preferred for identifying hypopneas, the thermal sensor remains the gold standard for apnea detection. Equipping your diagnostic rooms with this specific sensor ensures your recorded data meets stringent regulatory and clinical standards.
Optimizing Your Sleep Lab Inventory
Managing a busy sleep clinic means minimizing equipment downtime. Because the Alice 6 thermistor is fully reusable, it requires simple adherence to standard high-level disinfection protocols between patients, keeping your per-patient consumable costs incredibly low. We recommend keeping multiple backup sensors on hand in your inventory to ensure uninterrupted testing capabilities, especially for clinics running simultaneous multi-bed overnight studies.
Technical Specifications
| Feature | Specification |
|---|---|
| System Compatibility | Philips Respironics Alice 6 System (LDxS / LDxN) |
| Sensor Technology | Thermistor (Thermal Airflow Detection) |
| Target Patient Size | Adult |
| Channel Configuration | Single-channel (Combined Nasal & Oral) |
| Connector Type | 2-Pin Keyhole (249 Connector Interface) |
| Reusability | Fully Reusable |






Dr. Abhinav Kulkarni –
Accurately captures both nasal and oral temperature differentials during overnight PSG studies. Excellent sensitivity for distinguishing hypopneas from complete obstructive apneas according to AASM scoring criteria.
Sarita Nair –
The 2-pin keyhole connector fits securely into the Alice 6 headbox with zero loose contact noise. Lightweight prongs stay positioned properly throughout the night without irritating the patient’s upper lip.
Deepak Rajagopal –
Great build quality on the cable insulation and strain reliefs. It has passed continuous baseline calibration checks across multiple diagnostic setups with zero drift.
Dr. Tanushree Ghosh –
High-voltage response curve provides crisp airflow waveforms without needing aggressive software filtering. Wipes clean easily between patient studies using standard surface disinfectants.
Manojit Chakraborty –
A highly cost-effective and dependable replacement for OEM part #1078754. Fast dispatch, secure packaging, and immediate plug-and-play compatibility with our Alice 6 stations.