The Raddy WT-1 thermometer is designed for glass surfaces like windows and greenhouses. Simply stick it outside and read the accurate temperature, max/min records, and trends from inside—no need to open windows.
Featuring a clear transparent LCD with large digits and IP44 weather resistance, it withstands rain, snow, and sun. Easy to install with included adhesive pad, no tools needed.
Powered by 1 AAA battery (included) for up to 1 year, with a low battery indicator to keep you informed. Ideal for window panes, wine cellars, patios, and sunrooms.
Easily track the highest and lowest temperatures of the day at a glance, helping you monitor fluctuations and manage your environment with confidence.
Accurately measures temperatures from -25℃ to +70℃ (-13℉ to +158℉), suitable for various climates and seasons, ensuring reliable readings all year round.
Built with an IP44 rating to resist wind, rain, and splashes—perfect for indoor and outdoor use on glass and other transparent surfaces.
Specifications：
Temperature Range: -25℃ to +70℃ (-13℉ to +158℉)
Resolution: 0.1℃ / 0.2℉
Measurement Interval: Every 60 seconds
Max/Min Memory: Records 24-hour high and low temperatures
Temperature Unit: °F or ℃ (Default: ℉; switchable in the battery compartment)
Time Format: 12-hour / 24-hour (Default: 12-hour)
Display Mode: Switch between Max/Min Temperature and Time (switchable in the battery compartment)
Power Supply: 1× AAA battery per unit (included)
AAA Battery Operating Range: -10℃ to 50℃ (14℉ to 122℉)
Battery Life: Up to 1 year
Water Resistance: IP44
QA:
Q: Can I install this thermometer on a wall or wooden surface?
A: No. The WT-1 is specifically designed for transparent surfaces like glass or acrylic. It must be viewed from the opposite side to read the temperature correctly.
Q: How do I install it?
A: Simply peel off the backing of the included adhesive pad and stick the unit onto a clean, transparent surface. No tools or drilling are needed.
Q: Can it be used in cold weather?
A: Yes, it operates reliably from -25℃ to +70℃ (-13℉ to 158℉). For temperatures below -10℃ (14℉), we recommend using lithium AAA batteries, as they perform better than alkaline batteries in extreme cold.
What’s in the box?
2 x WT-1 Thermometers
2 x AAA Batteries
2 x Extra Adhesive Pads
1 x User Manual
Note:
Standard alkaline batteries may lose power and experience voltage drops in extreme cold (below -10℃ / 14℉), which can lead to device malfunctions. For reliable operation in low temperatures, we recommend using lithium AA batteries, which perform better in cold environments.