1. Only the WH32 sensor data can display "Outdoor Temperature and Humidity" on the WS View app when work with GW1000.
2. The WH31 sensor data will display "Multi-channel Temperature and Humidity" on the WS View app when work with GW1000.
3. One GW1000 can only receive one WH32 sensor data.
4. One GW1000 can receive up to 8 WH31 sensor data.
5. The WH32 sensor data can be uploaded to weather underground, while the WH31 could not.
6. Both the WH32 and WH31 data can be uploaded to ecowitt.net.
7. The WH31 can work with HP2550/HP3500/HP3501.
8. Both WH31 and WH32 sensors can be used outdoors. If you only need one for outdoors, we recommend you to choose the WH32 sensor.