





🌦️ Own the forecast, don’t just watch it!
The ECOWITT WH40 is a high-precision wireless rain collector sensor designed as an accessory to pair with Ecowitt Wi-Fi gateways or display consoles. It features a self-emptying funnel for continuous, maintenance-free rainfall measurement with 0.1mm resolution and a robust 100m wireless range. Real-time data is accessible via dedicated apps and popular weather platforms, empowering professionals and enthusiasts to monitor rainfall trends with ease and accuracy.













| ASIN | B07JKWM2VB |
| Are batteries included? | No |
| Best Sellers Rank | 181,975 in Garden ( See Top 100 in Garden ) 105 in Rain Gauges 327 in Plant & Soil Monitoring |
| Brand | ECOWITT |
| Colour | WH40A |
| Connectivity Technology | wireless frequencies like 915 MHz, 920 MHz, 868 MHz, 433 MHz, Wi-Fi |
| Connectivity technology | wireless frequencies like 915 MHz, 920 MHz, 868 MHz, 433 MHz , Wi-Fi |
| Customer Reviews | 4.4 out of 5 stars 240 Reviews |
| Display Type | Without display |
| Frequency | 433 MHz |
| Included Components | Instruction Manual |
| Item Shape | Rectangular |
| Item Weight | 500 Grams |
| Manufacturer | ECOWITT |
| Manufacturer Part Number | WH40B |
| Material | Plastic |
| Model Number | WH40 |
| Power Source | Battery Powered |
| Power source | Battery Powered |
| Recommended Uses For Product | Courtyard, Garden, Outdoor |
| Recommended uses for product | Courtyard, Garden, Outdoor |
| Sensor Technology | Tipping Bucket (Inferred) |
| Special Features | Lightweight, Wireless |
| Special feature | Lightweight, Wireless |
| Style Name | Modern |
| Temperature Accuracy | 2 °C |
| UPC | 711639641235 |
| Upper Temperature Rating | 60 Degrees Celsius |
J**S
Works well
This was a replacement as the first one failed after a few years in a challenging environment next to the sea.
K**N
Excellent value for money
Have had it for years. Good quality, never had any issues.
I**A
Not impressed
Fitted lithium batteries. They get drained to zero in a few days. Returned as not fit for purpose for full refund.
H**D
Zuverlässigkeit
Seit Monaten im Einsatz, liefert zuverlässig genaue Daten für mein Homematic System.
A**A
Correcto
Muestra con precisión los datos de pluviométricos. Lástima que la app no se pueda asociar con Alexa para poder crear rutinas y avisos cuando llueve.
C**N
Letture non sempre precise.
Montaggio eseguito come da istruzioni, nonostate tutto e misurazioni risultano sempre ampiamente scarse rispetto al reale.
H**S
Not accurate enough
At first it seems like a good rain gauge. But in heavy showers it counts too little. The drops then bounce out because of the low rim and flat funnel. At Ecowitt you can buy an add-on edge that improves it somewhat. So They know the problem! Why is the design not adjusted or the border supplied??? But with the add-on edge, it still counts too little in heavy showers! Either the Edge is still too low or the clapper is too slow! So actually a bad design that can be adjusted with a little will from Ecowitt!
B**N
Looks very good quality and easy to set up
Bought it to supplement a different type of rain gauge on PWS. Just need it to rain now to test it.
Trustpilot
1 month ago
1 month ago