The PSR-11-37-D2 will work in the OMS Pro Dive O2 Analyzer II (Yellow Rectangle † see note below) analyzers.

† The original OMS company (prior to 2015) sold several different products under the same "Professional Dive O2 Analyzer" name and using the same documentation bundled with different accessories, however while they have the same name they all use different specific oxygen sensors. You can distinguish the analyzers by their color and shape, either white rectangle or yellow rectangle or yellow peanut. The yellow rectangle shape requires a PSR-11-37-D2 sensor, the white rectangle shape requires a PSR-11-37-D3 sensor, the yellow peanut shape requires a PSR-11-39-MD5 sensor.

We are a high volume retailer of AI brand diving sensors, assuring that replacement sensors ordered from Dive Gear Express are always among the freshest available. Due to the unique nature of the product, this diving grade oxygen sensor is NON-RETURNABLE. Your complete satisfaction is our goal, so please consider carefully before purchase.