The monitor uses a high-precision sensor to detect changes in temperature (as small as 0.1°C) and humidity (1% RH). It refreshes data every 6 seconds and displays both values at the same time.

Light sensors to consider: ERYUE Light Sensor $19.99 UbiBot WS1-Pro Wifi Temperature Humidity Illumination Monitor $89.99 ...

Keep track of your air temperature and humidity at home with IBS-TH3 PLUS, the digital thermo-hygrometer from INKBIRD. It's a smart device for monitoring your indoor air quality.

Kidde Smart Fire/CO Alarm with Indoor Air Quality Monitor review While limited in utility, the $20 upgrade over Kidde’s other smart smoke/CO detector isn’t a bad deal. By Christopher Null ...

The Meter Pro from SwitchBot is so easy to use, and will keep me updated on firework smoke, air hazards and more.