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.

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

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.

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

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.

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 ...