datasheet: https://www.sensirion.com/en/environmental-sensors/humidity-sensors/humidity-temperature-sensor-sht2x-digital-i2c-accurate/

lib https://github.com/SodaqMoja/Sodaq_SHT2x

SHT21 Module: GY-213V-SHT21 (5$)


SHT20: 

AliExpress: 3.69$


SHT25: self made from SHT20 module (4$) and SHT25 sensor (10$)





AliExpress: 3.5$ for 2



Sensors test examples: 

v1 draft multiple humidity sensors comparision

Test 1 with SD datalogging 2 mux 20 hours

Test 1 SD Datalog with AHT10 and high humidity

Test 4 v5 High Humidity

Test 5 v5 saturated salt solution

Test 1 v6 balcony RH47-RH50

Test 4 v6 Saturated NaCl solution

Test 5 v6 above water

Test 2 v7 room RH12 low humidity

Test 3 v7 balcony RH15-92 changing humidity

Test 4 v8 RH12 to RH94#SensirionSensorsHumidity

Test 1 v8b Balcony high to mid RH

Test 1 v9 humidity absorber draft

Test 2 v9 steam in bathroom


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