The Si7021 sensor enables accurate temperature and humidity measurements. It is equivalent in terms of characteristics to DHT22. It is a much more compact digital sensor (like the SHT30 used by Wemos for its shield or the Xiaomi temperature sensor) which transmits the measurements via the I2C bus. It will be very easy to integrate into Arduino, ESP8266 and Raspberry Pi projects. It is supported by ESP Easy firmware for ESP8266 WiFi modules.
Technical characteristics of Si7021
- Temperature measuring range: -10°C to +85°C
- Measuring accuracy: +/- 4°C
- Range of humidity measurement: 0 to 80% RH
- Measurement accuracy: +/- 3%
- Supply voltage: 1,9 to 3,6V
- I2C output
Si7021, I2C temperature and humidity measurement Offers
ESP Easy compatible sensors and actuators offers
- All prices mentioned above are in United States dollar.
- This product is available in Ebay, AliExpress, Banggood, Amazon.com.
- At ebay.com you can purchase Si7021 Industrial High Precision Humidity Sensor I2C Interface for Arduino for only $2.43, which is 91% less than the cost in Amazon.com ($27.66).
- The lowest price of Si7021 Temperature And Humidity Sensor/Applications HVAC/R Thermostats/Humidistats Indoor Weather Stations Automotive Climate Control And Defogging was obtained on 28 May 2018 2 h 04 min.
Sensors: Temperature | humidity
Output | Relay: 0
tags: EAN List: 0717520029779; 0717520028758; 7442870792372; 6083989203512; 6083989203512; 9320689532076; 6514138613833; 0769471400381