--- product_id: 275004036 title: "WH51 Soil Moisture Sensor Soil Humidity Tester - Accessory Only, Can Not Be Used Alone" brand: "ecowitt" price: "€ 76.79" currency: EUR in_stock: true reviews_count: 6 category: "Ecowitt" url: https://www.desertcart.be/products/275004036-wh51-soil-moisture-sensor-soil-humidity-tester-accessory-only-can store_origin: BE region: Belgium --- # 1-100% soil moisture range 72s wireless data refresh IP66 waterproof rating WH51 Soil Moisture Sensor Soil Humidity Tester - Accessory Only, Can Not Be Used Alone **Brand:** ecowitt **Price:** € 76.79 **Availability:** ✅ In Stock ## Summary > 💧 Stay ahead of your garden’s thirst with precision wireless soil sensing! ## Quick Answers - **What is this?** WH51 Soil Moisture Sensor Soil Humidity Tester - Accessory Only, Can Not Be Used Alone by ecowitt - **How much does it cost?** € 76.79 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.be](https://www.desertcart.be/products/275004036-wh51-soil-moisture-sensor-soil-humidity-tester-accessory-only-can) ## Best For - ecowitt enthusiasts ## Why This Product - Trusted ecowitt brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Rapid Wireless Updates:** Get fresh soil moisture data every 72 seconds for real-time precision. - • **Smart Remote Monitoring:** Access live data and history anytime via Ecowitt app or web portal—stay connected wherever you are. - • **Built for All Environments:** IP66 waterproof design ensures reliable indoor and outdoor use, rain or shine. - • **Seamless Multi-Sensor Support:** Pair up to 8 WH51 sensors with Ecowitt gateways for comprehensive soil monitoring. - • **Customizable Alerts & Channels:** Edit channel names and receive email alerts to never miss critical soil moisture changes. ## Overview The Ecowitt WH51 Soil Moisture Sensor is a wireless, IP66 waterproof device designed to measure soil moisture levels from 1% to 100% with data updates every 72 seconds. Compatible with Ecowitt gateways and consoles (sold separately), it supports up to 8 sensors simultaneously and enables remote monitoring via app or web. Ideal for indoor and outdoor plants, it offers customizable channel naming and email alerts for proactive soil management. ## Description Ecowitt WH51 Soil Moisture Sensor measures soil moisture content quick and accurate. The data can be accepted by GW1100 Wi-Fi Gateway(sold separately) and can be viewed on our WS View/Ecowitt APP after the Wi-Fi configuration done. Review: Good moisture sensor soil! - Good moisture sensor soil! Review: Excellent ! - Je cherchais un Testeur d'humidité du sol efficace et pas trop cher et je suis vraiment enchanté par ce produit. Extrêmement facile à paramétrer, en 10 minutes j’avais installé le module wifi et la sonde qui donnait 0% dans l’air et 100% dans un verre d’eau. L’idée pour moi est de surveiller l’arrosage d’une haie et on voit parfaitement l’arrosage automatique à 6H du matin et le retour à la normal le long de la journée. Rien à dire de négatif. ## Features - 【Reliable Wireless Soil Moisture Sensor】: Equipped with advanced chip, ECOWITT WH51 wireless soil moisture sensor collect soil moisture data within 72 seconds when totally inserted into the soil. The data can be transmitted via GW1000/GW1100 Wi-Fi gateway( sold separately ) and the live data can be viewed on WS View Plus or Ecowitt APP after Wi-Fi configuration done. - 【Support Pairing with Various Ecowitt Gateway/Consoles】: The GW1100 Gateway(sold separately) supports up to 8 WH51 Soil Moisture Sensors, and the channel name can be edited. When paired with a Weather Station Console (HP2551/HP3500/HP3501), up to 8 channels WH51 sensors supported and you can view soil moisture data in real-time on the Display. When paired with Console WH0291, you only can view soil moisture data in real-time on the Display. - 【Uploading to Ecowitt Weather Server】: Supports uploading to our free Ecowitt weather server(ecowitt.net) to view the soil moisture data graph and download the history records on the website; support setting and receiving email alerts from the server; channel names can be edited on the website; supports remote monitoring with smart phone, laptop, or computer by visiting the website. - 【Indoor & Outdoor Use】: The IP66 waterproof moisture sensor can be used for indoor & outdoor potted plants, lawn, garden, farm etc. ★ Please Note : ecowitt WH51 soil moisture sensor is designed to measure soil moisture ONLY. Do not touch the stone or hard rock soil. ★ - 【NOTE BEFORE PURCHASE】: Ecowitt WH51 soil moisture sensor could not directly display the soil humidity readout, which can not be used alone. North America:915MHz; Europe:868MHz; Other areas: 433MHz ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07JM621R3 | | Battery Description | 1 x AA | | Battery description | 1 x AA | | Brand | ECOWITT | | Brand Name | ECOWITT | | Color | WH51B | | Colour | WH51B | | Customer Reviews | 4.4 out of 5 stars 993 Reviews | | Manufacturer | ECOWITT | | Model | WH51B | | Mounting Type | Insert into the ground | | Mounting type | Insert into the ground | | Operating Humidity | 1-100% | | Operating humidity | 1-100% | | Part Number | WH51B | | Temperature Accuracy | 1 degrees_celsius | | Temperature Reading Accuracy | plus_minus_1_degree_celsius | | UPC | 711639641259 | | Unit Count | 1 Count | | Upper Temperature Range | 50 Degrees Celsius | | Upper temperature rating | 50 Degrees Celsius | ## Product Details - **Battery description:** 1 x AA - **Brand:** ECOWITT - **Colour:** WH51B - **Mounting type:** Insert into the ground - **Operating humidity:** 1-100% ## Images ![WH51 Soil Moisture Sensor Soil Humidity Tester - Accessory Only, Can Not Be Used Alone - Image 1](https://m.media-amazon.com/images/I/61JOlQodiCL.jpg) ## Questions & Answers **Q: Do you have wh51 transmits at 433 mhz? what would it be named? wh51a? or wh51c?** A: My WH51B devices use 914915000, or about 915Mhz. If you are trying to identify which frequency band your device is using, I couldn't do it from packaging. The best answer that I could give you is that if you bought it on Amazon with a US shipping address, then you probably got the 915 version instead of the 433 that you thought you were buying. I understand that if you need a 433, you can contact Ecowitt and they will send you one intended for another country. RTL_433 can be configured to use the 915 band, though this will mean you have two instances of RTL_433 and the sdr hardware. I do. The WH51B is not a powerful transmitter, and the receiver can't be a long distance away. I struggled with getting the WH51B to work with RTL_433, so I'll share my config: frequency 914915000 sample_rate 250000 protocol 142 report_meta time:off output mqtt:192.168.0.xxx,events=eco2mqtt[/id] If you have trouble, post in the RTL_433 github issues and someone will help. **Q: What is %ad? how does it relate to any standard measure of soil water content** A: Hi, the %ad refers to the defaut dry definition on the fixed slope rate linear system. We recommend you to have a look at the manual(you can download it on our official website) from P8-12 to understand that better. Any question, please contact us at support@ecowitt.com. **Q: Can you just leave the wh51 soil moisture sensor in the ground outdoors to constantly check the soil with the gw1000 remotely?** A: Hi, yes. The wh51 is communicating with the gw1000 via RF signal and the reporting distance is within 300feet/100m(in open area). After you finish the wifi configuration on the free WS View app with the gw1000, you can upload the data to our own weather server: ecowitt.net. Then you can remoting the data by visting the ecowitt.net website(need to add your gw1000 device on the website first). Any other question, please let us know at support@ecowitt.com.:) **Q: Can this who291 transmit to the lcd display panel and also a gw1000 wifi gateway for logging, at the same time?** A: Hi, GW1000 can accept the sensor data in the WH0291 and upload to our free weather server: ecowitt.net. So the GW1000 + WH0291 works! The WH0291 actually is the WH51 sensor with a display. Any other question, please contact us at support@ecowitt.com.:-) ## Customer Reviews ### ⭐⭐⭐⭐⭐ Good moisture sensor soil! *by V***. on 7 January 2026* Good moisture sensor soil! ### ⭐⭐⭐⭐⭐ Excellent ! *by E***E on 29 April 2026* Je cherchais un Testeur d'humidité du sol efficace et pas trop cher et je suis vraiment enchanté par ce produit. Extrêmement facile à paramétrer, en 10 minutes j’avais installé le module wifi et la sonde qui donnait 0% dans l’air et 100% dans un verre d’eau. L’idée pour moi est de surveiller l’arrosage d’une haie et on voit parfaitement l’arrosage automatique à 6H du matin et le retour à la normal le long de la journée. Rien à dire de négatif. ### ⭐⭐⭐⭐⭐ Dobry sensor bezprzewodowy *by G***A on 24 May 2025* Sensor łączy się nie tylko z dedykowaną bramką WiFi. Połączył się z moją stacją sbs-ws-500 i dobrze pokazuje wilgotność gleby w ogrodzie. Wskazania mogę obserwować zarówno na stacji jak i w aplikacji Ecowitt. Polecam. ## Frequently Bought Together - ECOWITT WH51 Soil Moisture Sensor Soil Humidity Tester - Accessory Only, Can Not Be Used Alone - ECOWITT Wi-Fi Gateway Weather Station, with Built-in Temperature, Humidity, and Barometric Sensors, IOT Ready, Supports Ecowitt Sensors Developed, USB Power, 915 MHz - Ecowitt GW2000 Wi-Fi Hub for Wittboy Weather Station, with Built-in on Board Barometer and Thermometer/Hygrometer Sensor, Support Ecowitt Weather Sensors --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.be/products/275004036-wh51-soil-moisture-sensor-soil-humidity-tester-accessory-only-can](https://www.desertcart.be/products/275004036-wh51-soil-moisture-sensor-soil-humidity-tester-accessory-only-can) --- *Product available on Desertcart Belgium* *Store origin: BE* *Last updated: 2026-07-15*