eBay
CO2 Indication Levels: Clear color-coded indicators notify you of air quality levels, helping you to easily interpret CO2 concentrations from 0 to 5000 ppm. Multi-Functional 5-in-1 Design: Detects CO2, HCHO, TVOC, temperature, and humidity, giving you a thorough picture of your indoor air quality.
eBay
Fertility: 0~1999 μS/cm. The 6-in-1 Soil Tester is the ultimate upgrade for plant enthusiasts and professional growers. Featuring a unique 90° rotatable display, you can read your data comfortably from any angle without bending down.
eBay
Humidity Range: 20%-99%RH. Humidity Accuracy: ±5%RH (20%-99%, 25℃). Large LCD digital display screen, clear and easy to read even at a long distance. Indoor Temperature Range: -10 - +50℃ (+14 - +122℉).
eBay
To set your hands free when you fly drones, rc planes, wings, helicopters and quads, long distance shooting. A good helper in CFM calculation. 💖Air Flow in CFM (Q)=Wind speed(V) x Duct Cross Sectional Area(A)💖.
eBay
Can detect soil fertility, acidity and alkalinity, temperature, humidity, light, and air humidity. This soil tester can not be used for liquid detection. 1 Soil Tester. Highly sensitive probe, rapid detection and reading of soil information.
eBay
Features HCHO comparison function, it can compare HCHO comparison values in various places. Intuitive TFT Screen: The CO2 detector supports animated customization and color coded reminder display when values exceed preset thresholds.
eBay
It also includes a 3.5mm output interface compatible with standard headphone jacks for connecting to optional 5-12V alarm speakers (not included), further enhancing its functionality. Item Type: Temperature and Humidity Detector.
eBay