







Backlit Indoor Temperature and Humidity Monitor
Keep room temperature, humidity and recent extremes visible on a large backlit standalone display.
✅ Check both local conditions together - The screen brings temperature and relative humidity to one viewing point.
✅ Compare daily changes - Maximum and minimum memory provides a reference for highs and lows.
✅ Choose the placement - A table stand and wall-hanging arrangement suit different viewing positions.
✅ Read in lower room light - A backlight helps when the display area is dim.
Make room conditions easier to follow
Place the meter where it represents the room rather than a radiator or open window. Comparing readings from a consistent position is more useful than moving it between hot and cool spots.
The meter reports conditions but does not control humidity or diagnose a health issue. Choose Celsius or Fahrenheit as needed and check the memory-reset behaviour when starting a new observation period.






Technical details
- Model: WS0421
- Type: thermometer/hygrometer
- Display: LCD with backlight reference
- Placement: standing or wall hanging
- Functions: max/min memory and unit switch
- Battery: not included
- No smart-home connection
Add a visible room-condition reference to your shelf or wall.
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