This DHT11 Temperature & Humidity Sensor features a temperature & humidity sensor complex with a calibrated digital signal output.
HDS05, the dew sensor, is a kind of switching-mode element and only sensitive to high-humidity, working under DC. It's used to protect equipments from dew because its high precision and quick response.
This Humidity resistance HR202L is a new type of organic polymer materials humidity sensor, a wide range of humidity sensing, stable performance, long-term use, can be applied to the storage compartment, indoor air quality control, building automation, medical, ...
Humidity sensor for measuring and controlling relative humidity.