ACEIRMC 4pcs Si7021 GY-21 SHT21 HTU21 Digital Humidity Temperature Sensor Module Replacement for SHT11 SHT15

- ACEIRMC 4pcs Si7021 GY-21 SHT21 HTU21 Digital Humidity Temperature Sensor Module Replace SHT11 SHT15 offers reliable performance and quality- The humidity and temperature sensor board that carries a digital SHT21 humidity and temperature sensor from Sensirion- Si7021 GY-21 Module Industrial High Precision Humidity Sensor I2C IIC Interface Module For Arduino Low Power CMOS IC Module- It has a 4-pin interface that can communicate directly with the analog pins