O2 Cell: PSR-11-39-MD

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  • Regular price $185.00
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The Analytical Industries (AI) PSR-11-39-MD, with a 3-pin Molex connector, is compatible with the Teledyne R-22D sensor and Maxtec MAX-305F sensor.

The Analytical brand PSR-11-39-MD is compatible with many rebreathers, including Poseidon Se7en & Discovery VI, Hollis Prism2 & Explorer MK2, KISS Classic/GEM and upgraded KISS Sport, Hammerhead, Liberty, SubGravity and many others.


  • Accuracy within +/- 2% of full scale

  • Response time is 6 seconds

  • Conformal coating

  • Temperature compensated

  • Hydrophobic membrane

Oxygen sensors are consumables and should be changed when your rebreather has a hard time reading the correct O2 levels in your loop or if they have been in use for over 1 year.

AI brand diving sensors ship with the documentation of a final pressure test for each sensor. The sensor is tested at approximately one ATA in air and 100% oxygen, then tested again at 1.8 ATA in oxygen, and the millivolt readings are recorded for all measurements. The results document that the cell is within specifications for current and linearity up to a PO2 exceeding 1.6 ATA. The dated test results are included in the package with each individual sensor.

Oxygen sensors are one of the very few items that are NOT returnable, because we can't know with absolute certainty how they were handled once delivered. They are critical to safety in rebreather. Your complete satisfaction is our goal, so please consider carefully before purchase.