X-Sense Radon Detector XR0B-SR for Home - Audible & Visual Alerts, Fast & Accurate DetectionSee the product on Tekdiscover$59.99 Buy it on Amazon
Plug-in 5-in-1 Indoor Air Quality Detector with HD Display for Accurate Home MonitoringSee the product on Tekdiscover$28.04 Buy it on Amazon
5-in-1 Portable CO2 Detector by Dienmern – Air Quality Monitor with Temp, Humidity, LED Display & 1600mAh BatterySee the product on Tekdiscover$23.99 Buy it on Amazon
GoveeLife Smart Air Quality Monitor H5106 with PM2.5 Sensor & LED Display, Wired star_border star_border star_border star_border star_border (4) See the product on Tekdiscover$39.98 Buy it on Amazon