--- product_id: 347583802 title: "Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem…" brand: "ecowitt" price: "¥7543" currency: JPY in_stock: true reviews_count: 13 url: https://www.desertcart.jp/products/347583802-wireless-soil-moisture-sensor-wh51-plant-water-monitor-soil-hygrometer store_origin: JP region: Japan --- # IP66 waterproof rating 72s wireless update 0-100% moisture range Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem… **Brand:** ecowitt **Price:** ¥7543 **Availability:** ✅ In Stock ## Summary > 🌿 Stay ahead of your garden game with precision soil sensing! ## Quick Answers - **What is this?** Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem… by ecowitt - **How much does it cost?** ¥7543 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/347583802-wireless-soil-moisture-sensor-wh51-plant-water-monitor-soil-hygrometer) ## 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 - • **Real-Time Soil Insights:** Get live moisture data straight to your phone via Ecowitt app—never guess when to water again. - • **Robust & Weatherproof Design:** IP66-rated sensor built to withstand indoor and outdoor conditions, rain or shine. - • **Seamless Multi-Sensor Support:** Connect up to 16 sensors per gateway to monitor every corner of your garden or office plants effortlessly. - • **Smart Alerts & History Tracking:** Set email notifications and access detailed moisture graphs and history on Ecowitt Weather Server to optimize plant care. - • **Custom Calibration for Precision:** Tailor moisture readings to your unique soil type with adjustable 0% and 100% AD settings for spot-on accuracy. ## Overview The Ecowitt WH51 Wireless Soil Moisture Sensor delivers fast, accurate soil moisture readings (0-100%) every 72 seconds via a reliable wireless connection to Ecowitt’s Wi-Fi gateway (sold separately). Designed for both indoor and outdoor use, its IP66 waterproof rating ensures durability in all weather. Compatible with up to 16 sensors per gateway, it supports custom calibration and integrates seamlessly with the Ecowitt app and Weather Server for real-time monitoring, historical data, and smart email alerts—empowering millennial professionals to optimize plant health with data-driven confidence. ## Description Soil Moisture Sensor WH51 Weather Station WS2910 Weather Station WS3820 Weather Station WS3901 Weather Station WS3900 Weather Station HP2564 Weather Station HP2561 Ecowitt WH51 Soil Moisture Sensor measures soil moisture content quickly and accurately. The data can be accepted by the GW1200/GW2000/GW3000/GW3010 Wi-Fi Gateway(sold separately) and can be viewed on our WSView plus mobile application after the Wi-Fi configuration is done. 1. Measures the moisture content of soil. 2. No display, need to work with the GW1200/GW2000/GW3000/GW3010 WIFI gateway(sold separately) to complete the WIFI configuration on our WSView plus App. 3. After the WIFI configuration, the live soil moisture data can be viewed directly on the WSView Plus App or Ecowitt App. 4. With 0%AD and 100%AD custom mode to manually calibrate the low/high moisture value so that you can get more accurate results for different soil types 5. The the GW1200/GW2000/GW3000/GW3010 Gateway(sold separately) supports MAX 16 WH51/WH51L Soil Moisture Sensors. Each new sensor will be recognized as a new channel according to the Power-on sequence. And please don't forget to attach a label of the channel on each sensor for distinction. 6.Works with WH0291 Display Console(Should be at the same RF frequency) 1 x Soil Moisture Sensor(NO display console) 2 x Cap cover(One long and one short.) 1 x Manual 1. Do not touch the stone or hard rock soil, if the soil is too hard and dry, easy to damage the sensor. 2. Design for testing soil ONLY. 3. It is recommended to insert the sensor totally into the soil and keep it in the soil for 2-3 minutes to get accurate readings. Moisture Range: 0% to 100%; Resolution: 1% AD setting range:70~200; Initial value:70 100%AD setting range:0%AD+10~1000; Initial value:500 Update Rate: 70 seconds Power: 1 x AA battery(not included) B0B466NPDR B0991GVBYK B09QKXMKS4 ## Features - 🍀🍀【NOTE BEFORE PURCHASE】🍀🍀This soil moisture sensor is only an accessory of Ecowitt soil testing system. You could not get the soil moisture value when separately using this device, you can get the accurate result from our free app Ecowitt or Ecowitt Weather Server after connecting with the GW1100 gateway and wifi configuration. Ecowitt GW1100 gateway is sold seperately. - 🌵🌵【Reliable Wireless Soil Moisture Sensor Meter】🌵🌵: Comes with advanced sensor, measuring soil moisture value within 72 seconds and the data can be transmitted to our ecowitt GW1100 gateway. After pairing with GW1100 gateway and finishing wifi configuration, you can view the live data of the soil moisture in your ecowitt app and webpage. The resule can also be uploaded to Ecowitt Weather Server. - 🌻🌻【Graph & History Records on Ecowitt Weather Server】🌻🌻: supported to upload to our free Ecowitt Weather server(ecowitt.net) to view the soil moisture data graph and download the history records on the website; support for setting email alarm to remind you to water plants. - 🌼🌼【Support Monitoring Multi Locations】🌼🌼: The GW1100 Gateway(sold separately) supports MAX 8 WH51 Soil Moisture Sensors, and the channal name can be edited. Note: Please download the latest WS View App and update the firmware to the latest to add more sensors; each new sensor will be recognized as a new channel according to the Power-on sequence. - 🌹🌹【Indoor & Outdoor Use】🌹🌹: IP66 waterproof moisture sensor, can be used for indoor outdoor potted plants, lawn, garden and more; Also works with our WH0291 Display Console(Should be at the same RF frequency) / HP2551/WH6006 Weather Station(all sold separately). ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B09B3SP2BL | | Best Sellers Rank | 17,069 in Garden (See Top 100 in Garden) 27 in Soil Meters | | Brand | ECOWITT | | Country Of Origin | China | | Customer Reviews | 4.5 4.5 out of 5 stars (357) 4.5 out of 5 stars | | Item Dimensions | 17 x 9 x 3 centimetres | | Item Weight | 0.09 Kilograms | | Manufacturer | ECOWITT | | Manufacturer Part Number | WH51A | | Material | Plastic | | Measurement Accuracy | High Accuracy | | Measuring Range | 0~100% | | Model Number | WH51 | | Mounting Type | Ground insertion | | Output Type | digital | | Response Time | 72 seconds | | Specific Uses For Product | Gardening, plant care, soil testing, use with specific Ecowitt devices | | Style Name | Minimalist | ## Product Details - **Brand:** ECOWITT - **Item dimensions L x W x H:** 17 x 9 x 3 centimetres - **Item weight:** 0.09 Kilograms - **Material:** Plastic - **Style:** Minimalist ## Images ![Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem… - Image 1](https://m.media-amazon.com/images/I/512+aOx8jbL.jpg) ![Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem… - Image 2](https://m.media-amazon.com/images/I/61WjI+apDBL.jpg) ![Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem… - Image 3](https://m.media-amazon.com/images/I/61AJ5wcUpxL.jpg) ![Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem… - Image 4](https://m.media-amazon.com/images/I/71NJS+MxRVL.jpg) ![Wireless Soil Moisture Sensor WH51 - Plant Water Monitor, Soil Hygrometer Tester with Email Alert, Just Accessory Sensor for Ecowitt Ecosystem… - Image 5](https://m.media-amazon.com/images/I/61ZjIkvf1iL.jpg) ## Available Options This product comes in different **Size Name** options. ## Questions & Answers **Q: Is this sensor designed to stay in the soil or only inserted when you need a reading?** A: It depends what you want it to do. If its just a check on soil moisture you can use it in multiple locations or leave it in one position to monitor on one plant - just remember you need to leave it in the soil for a few minutes to stabilise so you get an accurate reading every time you move it ## Customer Reviews ### ⭐⭐⭐⭐⭐ Reliable Soil Moisture Monitoring for the Garden and Allotment *by on Reviewed in the United Kingdom 29 May 2026* I've been using these soil moisture sensors with my weather station setup, and they've become one of the most useful tools I have at my allotment.The sensors were easy to pair with my Ecowitt system and started reporting data almost immediately. Once installed, they provide continuous soil moisture readings without needing to dig around in the soil or rely on guesswork.I use them to monitor several growing areas, and they've helped me make much better decisions about when to water. It's surprising how often the soil moisture level is different from what you'd expect by simply looking at the surface.The sensors are compact, unobtrusive, and seem to cope well with outdoor conditions. Battery life has also been excellent, meaning they can be left in place for long periods without needing attention.One of the biggest benefits is being able to view the data remotely through my weather station system. Whether I'm at home or visiting the allotment, I can quickly check moisture levels and see which areas need attention.Since installing them, I've wasted less water and have been able to keep conditions more consistent for my plants, especially during warm and dry periods.Overall, these are excellent sensors for anyone using an Ecowitt weather station. They provide reliable data, are easy to install, and take much of the guesswork out of watering. Highly recommended for gardeners, greenhouse growers, and allotment holders alike.Oh and pairing is a breeze, simply install the battery and they autopair with my existing ecowitt setup!! ### ⭐⭐⭐⭐⭐ Plug n play *by on Reviewed in the United Kingdom 11 April 2023* I already have their HP2551 weather station which is compatible with this sensor. I just put in a battery and the weather station found this sensor straight away, no set up needed. the Ecowitt app also displays its reading. Did as suggested to check it and it reads 0 in the open air and 100% in a glass of water so it seems to be functioning correctly. Included is a plastic cap to cover over the battery compartment so it seems earlier criticism of water ingress has been addressed. It's been very very wet since I bought it so the sensor (which I leave permanently in my garden) is giving me a reading between 78% and 84%, yes I live in a swamp at the moment!! ### ⭐⭐⭐⭐ A decent working solution *by on Reviewed in the United Kingdom 22 May 2022* I bought this so I can monitor my seedum roof on my office/shed. This lets me know when it needs to be watered. And so far its been a great help. The reason for going this route was because I thought I nearly killed it. But with this as an aid, the roof has quickly bounced back to life.It was easy to setup and get up and running. The app is a bit basic but does what you would expect and keeps all the readings on one place. I was a bit dubious of the build quality. But it seems up to the job. But time will tell on that. Fortunately its cheap enough to replace. As long as I get a minimum of a rear from it.You will of course need to buy the unit which talks to this and gives you access via wifi. But the good news is once you have purchased it. You then have the hub and ready to expand.I will be expanding this to the full weather station shortly. One thing I would really like to see is smart home integration. For exsample, once the soil on the room gets below a certain threashold, and the weather is not expecting rain for the next 24 hours. Then this would automaticly tell my automated sprinklyer system to turn on and water the roof and plants. Long term this would save money and not waste water. Of course this is great for when you are away as well. --- ## 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.jp/products/347583802-wireless-soil-moisture-sensor-wh51-plant-water-monitor-soil-hygrometer](https://www.desertcart.jp/products/347583802-wireless-soil-moisture-sensor-wh51-plant-water-monitor-soil-hygrometer) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-09-28*