Single, dual & quad channel analogue TO-39 packaged sensors

Our offer

Pyreos offers a full range of analogue TO packaged sensors from single to quad channel in the common sized TO-39 packages. Our products are reliable and easy to use. They all benefit from both the advanced performance of our thin film pyroelectric sensor and the integration of a front-end operational amplifier within the package.


Together this provides a compelling competitive advantage offering extremely strong responsivity, fast frequency of operation, faster response than any other pyroelectric or thermopile, instant switch-on, and unparalleled robustness.  Our customers are setting new performance records in terms of measurement resolution, temperature range, and real-time analysis.

Custom Filters to your requirements – fast sampling

All of our sensors are available with a wide choice of filters, and with options for all common gases, including CO2, toxic, flammable and refrigerant gases. We regularly source bespoke filters for our customers, unique to your specific NDIR gas or liquid analysis application.  We do this faster than other suppliers and apply these bespoke filters to our range of mature standard detectors. contact us

New – upgraded analogue quad range with 4x larger pixel area

Pyreos is now sampling our new quad range which carries 4 x 1mm2 pixels.  This provides much higher SNR and the product is mechanically vastly simpler and more robust than competing products.  The quad product range is expanding fast so if we do not list the filter combination you need then please contact us.

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Need a custom filter? Contact us

Key features & benefits

  • Fastest response leading to higher resolution and lower power consumption
  • High responsivity & SNR
  • Robust – low microphonics
  • Thermally stable to slow drift and thermal shock
  • Instant switch-on
  • Long operational life- a stable pyroelectric material
  • Operational from 1-40 Hz.  Class-leading SNR above 10-15 Hz
  • Wide filter choice
  • Extended temperature range
  • Less external gain required
  • Reliable & easy to use
  • Outstanding support of hardware, software and algorithm development

Ideal for

  • NDIR gas detection
  • Flame detection
  • NDIR pellistor & electrochemical replacements
  • Automotive gas analysis
  • Medical gas analysis
  • Anaesthesia
  • Fluid analysis
  • Food safety
  • THz detection
  • Energy measurement
  • Miniaturised designs


Datasheet Download Col1 Col2 Col3 Col4 Col5 Col6 Col7 Col8 Col9 Col10 Col11 Col12 Col13 Col14 Col15 Col16 Col17 Col18 Col19 Col20
Pyreos Analog TO Sensor – One Channel Datasheet Download PY0213 PY0293 PY0275 PY0175 PY1944 PY0210 PY0211 PY0212 PY2214 PY0253 PY0254 PY1456
Pyreos Analog TO Sensor – Two Channels Datasheet Download PY0317 PY2486 PY0261 PY0234 PY2343 PY1943 PY0238 PY0305 PY0259 PY1839 PY0304 PY2055 PY0303 PY1466 PY1648 PY0308 PY2197 PY2550 PY2551 PY2547, PY2572
Pyreos Analog TO Sensor – Two Channels Optimised for 3-5 µm Datasheet Download PY2626 PY2738 PY2739 PY3151
Pyreos Analog TO Sensor – Four Channels Datasheet Download PY2706 PY2711 PY2710
Pyreos Analog TO Sensor – Four Channels Optimised for Hydrocarbons Datasheet Download
Pyreos Analog TO Flame Sensor – One Channel Datasheet Download PY1580 PY0575 PY0573 PY1600 PY0574 PY1601 PY0576 PY2712
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Evaluation kits

Pyreos has a range of easy-to-use, PC compatible demonstration kits available immediately for rapid and full evaluation of our sensor technology. Our evaluation kits typically use standard and well known, off-the-shelf electronic components to take our sensor output signal and digitise it, so that it can be transferred and analysed via USB interface on a standard Windows-based PC.

More information and ordering

Case Studies

Networked gunfire detection and identification systems for indoor applications

Gunshots generate noise, shock, and muzzleflash. Pyreos IR sensors analyse the flash. This system is used in schools, malls, offices and retail.

Pyreos gunshot detection graphic

Analogue TO39 CO2 detectors in medical devices

Prior Care (China) uses a Pyreos TO39 Dual CO2 detector in its mainstream and sidestream point-of-care CO2 measurement systems for anesthesia.

Analogue TO39 CO2 detectors in battery powered capnography devices

Prior Care (China) uses a Pyreos TO39 Dual CO2 detector in handheld battery powered capnography product. The WHO/WFSA (World Health Organisation / World Federation of Societies of Anaesthesiologists) has put CO2 monitoring in their recommendations for safe anaesthesia as “Highly Recommended”, the strongest category. This is now filtering through to national associations that can set legally binding standards.

Two quad analogue TO39 detectors in medical anesthesia OEM sensor

ITEC Engineering LLC (USA) uses two quad Pyreos TO39 detectors in its sidestream medical OEM module for measuring anaesthetic gas concentration.

Analogue dual TO39 detector in veterinary anaesthesia OEM sensor

ITEC Engineering LLC (USA) uses a dual Pyreos TO39 detector in its sidestream veterinary OEM module for measuring anaesthetic gas concentration.