It is a new type humidity sensitive element using organic high polymer materials with the characteristics of wide humidity sensitive range, quick response, good ability against pollution, no need to be heated and washed, stable and reliable performance in long time use. (1) Power supply 1.5V AC (MAX, sine wave) (2) Power 0.2mW (MAX, sine wave) (3) Frequency 500HZ~2KHZ (4) temperature 0 ~ 60℃ (5) Humidity lower 95%RH