Using organic high polymer material is a new type of humidity sensitive element wide range of moisture and the long-term use of stable performance Can be applied to warehousing carriages indoor air quality control building automation medical industrial control system and scientific research areas such as widely used. Parameters: Characteristic parameters (at 1 KHZ). Unit: ohm. The scope of work 20... 95% RH 0... 60 ?. AC power supply voltage of 1.5 V (Max sine wave). Working frequency 500 hz... 2 KHZ. Power rating of 0.2 mW (Max sine wave). Center value (at25 ? 1 KHZ 1 v AC 60% RH sine wave) 31.0kOhm. AC impedance range (at25 ? 1 KHZ 1 v 60% RH sine wave) 19.8 kΩ19.8…Humidity detection accuracy + / - 5% RH. Areas of application: used for temperature and humidity display temperature and humidity meter gift table atmospheric environmental monitoring industrial process control agriculture measuring instrument applications.