BW GasAlert Micro 5 Series Replacement LEL Sensor SR-W04
What is the life or expiration length on the different sensors for the BW GasAlert Micro 5?1 answer
The standard four gases (H2S, CO, O2, and LEL) have a two-year warranty. All other sensors have a one-year warranty.<br>
However, in practice the actual life of the sensors can be much longer. Some can last as long as 5 years.