Pro-rated warranty of 3 years with an expectant life of 4 years. Easy to change, a sensor is included when you buy an O2EII analyzer.
1) We are aware that there are a number of sensors on the market, some of which are cheaper, but none that we have seen are designed to mate correctly with the O2EII.
2) Replacement oxygen cells for the O2EII should only be purchased when required. Analox do not recommend that spare cells are bought when purchasing your O2EII. Electrochemical sensors are consumable items. We therefore cannot credit sensors if incorrect orders have been placed. This does not affect your warranty. Not Recommended For Rebreather Use