Medical oxygen sensor ke-25 ke-50 * long life - 2.5~10 years in ambient air * virtually no influence from co 2 , co, h 2 s, nox, h 2 * low cost * operates in normal ambient temperatures * stable output signal * no external power supply required for sensor operation * no warmup time is required Features: * medical - anesthetic instruments, respirators, oxygen-enrichers * biotechnology - oxygen incubators * food industry - refrigeration, greenhouses * safety - air conditioners, oxygen detectors, fire detectors