{"product_id":"ecowitt-wh51-wireless-soil-moisture-sensor","title":"Ecowitt WH51 Wireless Soil Moisture Sensor","description":"\u003cp\u003e\u003cspan\u003eMonitor how wet or dry \u003cstrong\u003ethe\u003c\/strong\u003e soil actually is and follow changes over time with the Ecowitt WH51 wireless soil moisture sensor for the Ecowitt WS3900.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003cp\u003eThe Ecowitt WH51 \u003cstrong\u003eadds soil moisture monitoring to your Ecowitt WS3900 weather station\u003c\/strong\u003e, giving you a simple way to see how conditions are changing below the surface rather than relying on how the soil looks or feels from above.\u003c\/p\u003e\n\u003cp\u003ePlace the sensor in the soil and it measures moisture from 0–100%, transmitting an updated reading approximately every 70 seconds to the Ecowitt WS3900.\u003c\/p\u003e\n\u003cp\u003eYour soil moisture data can then be viewed in the Ecowitt app and ecowitt.net, where you can follow current readings, look back at historical graphs and download your weather and soil-moisture records.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eKnow When the Soil Is Drying Out\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe Ecowitt WH51 is useful anywhere you want a clearer picture of how quickly soil is gaining or losing moisture.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt can help you follow conditions in garden beds, lawns, vegetable gardens, greenhouses or other planted areas, making it easier to see the effect of rainfall and watering and how quickly the soil subsequently dries.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eRather than relying on a single reading, the real value comes from being able to follow the trend over time. Once you become familiar with the readings for your particular soil and plants, you can see much more clearly when conditions are becoming drier or how effectively watering has penetrated the soil.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eView Soil Moisture in the Ecowitt App\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Ecowitt WH51 \u003cstrong\u003ecommunicates wirelessly with the Ecowitt WS3900 console using a radio signal.\u003c\/strong\u003e \u003cstrong\u003eThe sensor itself does not need Wi-Fi or an internet connection.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe Ecowitt WS3900 then uploads the soil moisture data for \u003cstrong\u003eviewing through the Ecowitt app and ecowitt.net.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eYou can see the current moisture reading, review historical graphs and download your recorded data without requiring a paid Ecowitt subscription.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003ePlease note:\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e Ecowitt WH51 soil moisture readings are not displayed directly on the Ecowitt WS3900 console screen. They are viewed through the Ecowitt app or ecowitt.net.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eMonitor Multiple Areas\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe Ecowitt WS3900 supports up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e16 shared WH51,and WH52 soil-sensor channels\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, allowing you to add additional sensors if you want to monitor several locations independently.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis can be particularly useful where different parts of a property dry at different rates or where plants have quite different watering requirements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eEach sensor can be identified separately within Ecowitt, making it easy to distinguish between the areas you are monitoring.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eSimple Wireless Installation\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe Ecowitt WH51 is battery powered and communicates wirelessly with the Ecowitt WS3900, so there is no cable required between the soil sensor and the house.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eFor the New Zealand\/Oceania version, the Ecowitt WH51 operates on 433 MHz\u003cspan\u003e, with a specified wireless transmission distance of up to approximately \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e100 metres in open conditions\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe sensor uses one AA battery and transmits an updated soil-moisture reading approximately every 70 seconds.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhen installing the sensor, loosen hard or compacted soil first and insert it vertically. Do not force or twist the probe into stones, roots or hard ground, as this can damage the sensor.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eWhy Choose the Ecowitt WH51?\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMonitor soil moisture directly\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — see how wet or dry the soil is rather than judging from the surface.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFollow changes over time\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — use Ecowitt graphs to see the effects of rainfall, watering and drying.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eWireless connection to the Ecowitt WS3900\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — no cable is required between the soil sensor and console.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eView readings on your phone\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — access current and historical soil-moisture data through the Ecowitt app.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eFree historical records\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — review graphs and download your data through ecowitt.net without a paid Ecowitt subscription.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e\u003cspan\u003eMonitor several locations\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e — add further compatible soil sensors if you want to compare different areas around your property.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eFAQ’s\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCan the Ecowitt WH51 operate on its own?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cspan\u003eNo. The \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eEcowitt WH51 is an accessory sensor and requires the Ecowitt WS3900\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e to receive its readings and upload them for viewing through the Ecowitt app or ecowitt.net.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cspan\u003eThe Ecowitt WH51 does not have its own display or Wi-Fi connection.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDoes the Ecowitt WH51 measure soil temperature?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cspan\u003eNo. The Ecowitt WH51 measures \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003esoil moisture only\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cspan\u003eIf you want to monitor soil moisture, soil temperature and electrical conductivity (EC), the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eEcowitt WH52\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e provides all three measurements.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eWill the Ecowitt WH51 reading appear on the Ecowitt WS3900 display?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cspan\u003eNo. The Ecowitt WS3900 receives the Ecowitt WH51 data, but soil-moisture readings are uploaded for viewing through the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eEcowitt app and ecowitt.net\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e rather than displayed directly on the console.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eCan I use more than one Ecowitt WH51?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cspan\u003eYes. The Ecowitt WS3900 supports up to \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e16 shared WH51 and WH52 soil-sensor channels\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, allowing separate sensors to monitor different areas.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eDoes the Ecowitt WH51 need Wi-Fi?\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cspan\u003eNo. The Ecowitt WH51 sends its reading directly to the Ecowitt WS3900 using a wireless radio signal.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e\u003cspan\u003eYour Ecowitt WS3900 uses your home Wi-Fi and internet connection when it uploads the soil-moisture information so you can view it in the Ecowitt app and ecowitt.net.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eSpecifications\u003c\/span\u003e\u003c\/h5\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eEcowitt\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eWH51\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSensor type\u003c\/td\u003e\n\u003ctd\u003eWireless soil moisture sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible weather station\u003c\/td\u003e\n\u003ctd\u003eEcowitt WS3900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIndependent operation\u003c\/td\u003e\n\u003ctd\u003eNo — requires the Ecowitt WS3900 to receive and upload its readings\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eData viewing\u003c\/td\u003e\n\u003ctd\u003eEcowitt app and ecowitt.net\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWS3900 console display\u003c\/td\u003e\n\u003ctd\u003eWH51 readings are upload-only and are not displayed directly on the Ecowitt WS3900 console\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoil moisture range\u003c\/td\u003e\n\u003ctd\u003e0–100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoil moisture accuracy\u003c\/td\u003e\n\u003ctd\u003e±5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSoil moisture resolution\u003c\/td\u003e\n\u003ctd\u003e1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCalibration\u003c\/td\u003e\n\u003ctd\u003eUser-adjustable 0% and 100% AD calibration for different soil types\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReporting interval\u003c\/td\u003e\n\u003ctd\u003e70 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWireless frequency\u003c\/td\u003e\n\u003ctd\u003e433 MHz — Oceania \/ New Zealand version\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTransmission range\u003c\/td\u003e\n\u003ctd\u003eUp to 100 m in open conditions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum sensor channels\u003c\/td\u003e\n\u003ctd\u003eUp to 16 shared WH51 \/ WH51L \/ WH52 channels with the Ecowitt WS3900\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeather resistance\u003c\/td\u003e\n\u003ctd\u003eIP66\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower\u003c\/td\u003e\n\u003ctd\u003e1 × AA battery — not included\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDisplay on sensor\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWi-Fi on sensor\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHistorical data\u003c\/td\u003e\n\u003ctd\u003eGraphs and downloadable history through ecowitt.net\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eIncluded\u003c\/td\u003e\n\u003ctd\u003e1 × WH51 soil moisture sensor, 2 × cap covers, user manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e \u003c\/p\u003e\n\u003cp style=\"padding-left: 40px;\"\u003e \u003c\/p\u003e\n\u003ch5\u003eDownloads\u003c\/h5\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0474\/0890\/6404\/files\/Ecowitt_WH51Manual.pdf?v=1790634679\" target=\"_blank\" title=\"Ecowitt Wh51 manual\" rel=\"noopener\"\u003eWH51 Manual\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Ecowitt","offers":[{"title":"Default Title","offer_id":53838278590628,"sku":"WH5","price":69.99,"currency_code":"NZD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0474\/0890\/6404\/files\/WH51_fe602e66-7048-4b09-b384-a2412c347c30.jpg?v=1790632737","url":"https:\/\/weatherstation.co.nz\/products\/ecowitt-wh51-wireless-soil-moisture-sensor","provider":"Weatherstations","version":"1.0","type":"link"}