If your UPM weather station is no longer receiving outdoor temperature or humidity readings, the sensor is often the issue.
In many cases, the outdoor sensor fails before the base unit, making replacement the most practical solution.
👉 Shop weather station sensors
Original UPM legacy stock • Limited inventory • Ships from Canada
Common Problems with UPM Weather Station Sensors
- No signal between sensor and base station
- Temperature or humidity not updating
- Intermittent readings
- Sensor display completely blank
These issues are common with older UPM models, especially after extended outdoor exposure.
Before Replacing the Sensor
- Replace batteries in both the sensor and base station
- Reset the system and re-sync the sensor
- Ensure the sensor is within range
- Check for water damage or corrosion
If the issue persists, the sensor is likely at end-of-life.
Replacement Options
Many UPM weather station models are now discontinued. Finding compatible replacements can be difficult.
We carry original UPM legacy sensors and units, including WT440 and WT440H, while inventory lasts.
👉 Shop weather station sensors
Important Note on Compatibility
Not all sensors are interchangeable between models. Always verify your original model number before purchasing.
Why Replace Instead of Repair?
- Outdoor exposure damages internal components over time
- Electronics degrade and lose accuracy
- Replacement is more reliable than repair
Need Help?
Final Note
UPM weather station products are no longer in production.
Remaining inventory is limited and may not be restocked.
👉 If your sensor is failing, it is best to secure a replacement while stock is still available.
Looking for other UPM replacements?
- 👉 Thermostat not working?
- 👉 Timer issues?