O2 Sensor Type D-21R | Oxygen Sensor for Rebreathers

The D-21R is a galvanic oxygen sensor designed for reliable use in oxygen analyzers and rebreathers. It features a gold-plated COAX/SMB connection and an M16x1 thread at the bottom, manufactured to the highest specifications with improved response times and temperature compensation for demanding diving environments. Compatibility / Usage: Gas Analyzers & Rebreathers: AP Diving Rebreathers Halcyon and Halcyon Symbios Rebreather XCCR Rebreather IQ Sub Rebreather Flex2 Rebreather Apoc pod Deep Pursuit head Equivalent to: Narkedat90 NaNS01 You can browse the full compatibility table here. Key Features: Galvanic oxygen sensor Gold-plated COAX/SMB connection M16x1 thread at the bottom Compatible with many common oxygen analyzers and rebreathers High accuracy for precise oxygen measurements Improved response times Temperature compensated Long service life and stable sensor performance Made in Germany for premium quality Each sensor is individually tested and inspected before shipping Trusted by divers worldwide for durability, consistency, and precision NRC replacement sensors are recognized for their first-class quality and outstanding reliability, making them a trusted choice among divers worldwide.