# Environment Sensors

We want to record two things at minimum, temperature and humidity.

| PN# | IC/PN# Cost | Module Cost | Extra Values | Notes |
| ---- | ---- | ---- | ---- | ---- |
| SHT30 | $4.00 | $3.70 | None |  |
| SHT31 | $7.00 | $7.00 | None |  |
| BME680 | | $11.50 | VOC | VOC=volatile organic compounds |
| DHT22 | | $7.00 | None | |
| Si7021 | | $5.00 | None | |
| AHT20 | | | | |
| AM2320 | | $3.00 | None | |