🌡️ HiLetgo 2pcs Si7021 Temperature Humidity Sensor for Arduino GY-213V-SI7021 - Industrial High Precision with I2C Interface Review

Humidity started out 18% higher than the Adafruit si7021 - and stayed that way. The temperature tracked another sensor closely after a few days. Sensor 1 died after 1 week. Try sensor 2.

The devices I received reports that it is Si7020, not the advertised Si7021. While they're pretty much identical in spec, the 20's aren't as accurate as the 21's with moisture. I rate them one star because they don't give you what you paid for.

I have connected 4 of these devices to Raspberry Pi Zero W single board computers around the world. A house. They respond quickly to temperature and humidity changes and are more accurate than the BME280. Two of them are outdoors and two are indoors. They serve for months without any problems. The price is great: about $5 each. The SI7021 chip itself costs about $3, so $5 for a breakout board is a good deal and better than any of the competition I've seen. I just bought 2 more for a few more…

Humidity started out 18% higher than the Adafruit si7021 and stayed that way. The temperature tracked another sensor closely after a few days. Sensor 1 died after 1 week. Try sensor 2.

The messages I have received say it is Si7020 and not the Si7021 advertised. Although they're largely identical in performance, the Model 20 isn't as accurate in humidity as the Model 21. I'm rating it one star because it doesn't give you what you paid for.

I have connected 4 of these to Raspberry Pi Zero W single board computers around the house. They respond quickly to temperature and humidity changes and are more accurate than the BME280. Two of them are outdoors and two are indoors. They serve for months without any problems. The price is great: about $5 each. The SI7021 chip itself costs about $3, so $5 for a breakout board is a good deal and better than any of the competition I've seen. I just bought 2 more for a few more temp/humidity…