{"product_id":"trolmaster-wcs-9-substrate-sensor-set","title":"TrolMaster WCS-9 Substrate Sensor Set – VWC, EC \u0026 Temp","description":"\u003ch2\u003eRead the Whole Root Zone, Not Just One Spot\u003c\/h2\u003e\u003cp\u003eThe \u003cstrong\u003eTrolMaster WCS-9 Substrate Sensor Set\u003c\/strong\u003e measures \u003cstrong\u003evolumetric water content (VWC)\u003c\/strong\u003e, \u003cstrong\u003esubstrate EC\u003c\/strong\u003e and \u003cstrong\u003eroot-zone temperature\u003c\/strong\u003e for the Aqua-X, Hydro-X, Tent-X and Green-X control systems (NFS-1, NFS-2, NFS-3, HCS-2, TCS-1 and GCS-1). It pairs a \u003cstrong\u003eWCS-9 sensor display\u003c\/strong\u003e with a \u003cstrong\u003eWN-9 sensor node\u003c\/strong\u003e whose stainless steel spikes and built-in temperature sensor sit in the growing medium, in soil or in high-EC soilless substrates such as coco and rockwool. Up to \u003cstrong\u003efour WN-9 nodes\u003c\/strong\u003e can be daisy-chained to one display, which averages their readings into a figure you can trust for irrigation and \u003cstrong\u003ecrop steering\u003c\/strong\u003e.\u003c\/p\u003e\u003ch3\u003eWhat's Included\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003eWCS-9 sensor display\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eWN-9 sensor node\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003e16ft RJ12 cable set\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cstrong\u003eT-splitter\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e3-in-1 readings\u003c\/strong\u003e – VWC \u003cstrong\u003e0–100%\u003c\/strong\u003e, EC \u003cstrong\u003e0–30 mS\/cm\u003c\/strong\u003e and temperature \u003cstrong\u003e0–50°C\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMulti-node averaging\u003c\/strong\u003e – up to \u003cstrong\u003e4\u003c\/strong\u003e nodes per display to even out hot spots and channelling\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay at the slab\u003c\/strong\u003e – check each node or the average without walking to the controller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeed on demand\u003c\/strong\u003e – lets your controller trigger irrigation from substrate moisture\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDynamic reading intervals\u003c\/strong\u003e and simplified calibration\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eOne Probe, One Misleading Reading\u003c\/h3\u003e\u003cp\u003eA single substrate sensor sees one point in one slab. A dry pocket, a channel where water runs straight through or an EC hot spot next to a dripper can make that point unrepresentative, and every irrigation decision built on it over- or under-waters the whole zone. Averaging several nodes across the root zone gives a truer picture of dry-back, nutrient strength and root health.\u003c\/p\u003e\u003ch3\u003eHow to Use\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsert\u003c\/strong\u003e the WN-9's spikes fully into the substrate at a point that represents the zone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnect\u003c\/strong\u003e the node to the display and the display to your controller with the RJ12 cable set and T-splitter\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpand\u003c\/strong\u003e with up to three more WN-9 nodes, each linked by its own daisy-chain cable\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSet\u003c\/strong\u003e water content and EC targets on the controller to run feed-on-demand irrigation\u003c\/li\u003e\n\u003c\/ul\u003e\u003cdiv class=\"hcs-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e WCS-9 substrate sensor set (WCS-9 display + WN-9 node)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMeasures:\u003c\/strong\u003e volumetric water content, substrate EC, root-zone temperature\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater content range:\u003c\/strong\u003e 0–100%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEC range:\u003c\/strong\u003e 0–30 mS\/cm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemperature range:\u003c\/strong\u003e 0–50°C (32–122°F)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNodes per display:\u003c\/strong\u003e up to 4 WN-9\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProbe:\u003c\/strong\u003e stainless steel spikes with built-in temperature sensor\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 12V, 0.1A (from the controller)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatible controllers:\u003c\/strong\u003e NFS-1, NFS-2, NFS-3, HCS-2, TCS-1, GCS-1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubstrates:\u003c\/strong\u003e soil and high-EC soilless media such as coco and rockwool\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating environment:\u003c\/strong\u003e 0–50°C, up to 90% RH\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdiv class=\"hcs-faq\"\u003e\n\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eCan I add more sensor nodes later?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eYes. Up to four WN-9 nodes can be daisy-chained to one WCS-9 display; each extra node comes with its own daisy-chain cable. Ask us for WN-9 nodes.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eWhich growing media does it suit?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eTrolMaster built it for both soil and high-EC soilless substrates, so it suits rockwool, coco and soil.\u003c\/p\u003e\u003c\/details\u003e\u003cdetails style=\"border:1px solid #e6e6e6;border-radius:8px;padding:12px 16px;margin:0 0 8px;\"\u003e\u003csummary style=\"cursor:pointer;font-weight:600;\"\u003eDoes it work without a TrolMaster controller?\u003c\/summary\u003e\u003cp style=\"margin:10px 0 0;\"\u003eNo. It reports to an Aqua-X, Hydro-X Pro, Tent-X or Green-X controller, which logs the data and runs irrigation from it.\u003c\/p\u003e\u003c\/details\u003e\n\u003c\/div\u003e\u003ch3\u003eWorks Well With\u003c\/h3\u003e\u003cdiv class=\"hcs-related\" style=\"display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 0;\"\u003e\n\u003ca href=\"\/products\/trolmaster-aqua-x-irrigation-control-system-nfs-1\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/meters-sensors-trolmaster-aqua-x-irrigation-control-system-nfs-1-34599940718807.webp?v=1773574304\u0026amp;width=160\" alt=\"TrolMaster Aqua-X NFS-1 Irrigation Controller\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eTrolMaster Aqua-X NFS-1 Irrigation Controller\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eAqua-X controller that reads it\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/trolmaster-tent-x-tcs-1-smart-grow-tent-controller-environment-irrigation-automation\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/meters-sensors-trolmaster-tent-x-base-station-tcs-1-39081269067991.webp?v=1773570210\u0026amp;width=160\" alt=\"TrolMaster Tent-X TCS-1 Smart Grow Tent Controller\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eTrolMaster Tent-X TCS-1 Smart Grow Tent Controller\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eTent-X controller that reads it\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\u003ca href=\"\/products\/trolmaster-aqua-x-pro-irrigation-control-system-nfs-2\" style=\"flex:1 1 240px;display:flex;align-items:center;gap:12px;padding:10px 12px;border:1px solid #e6e6e6;border-radius:8px;text-decoration:none;color:inherit;background:#fff;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/meters-sensors-trolmaster-aqua-x-pro-irrigation-control-system-nfs-2-38939915583703.webp?v=1773576038\u0026amp;width=160\" alt=\"TrolMaster Aqua-X Pro NFS-2 Irrigation Controller\" width=\"64\" height=\"64\" loading=\"lazy\" style=\"width:64px;height:64px;object-fit:contain;flex:none;\"\u003e\u003cspan style=\"font-size:14px;line-height:1.4;\"\u003e\u003cstrong style=\"display:block;\"\u003eTrolMaster Aqua-X Pro NFS-2 Irrigation Controller\u003c\/strong\u003e\u003cspan style=\"color:#008d37;\"\u003eAqua-X Pro for multi-zone rooms\u003c\/span\u003e\u003c\/span\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"TrolMaster","offers":[{"title":"Default Title","offer_id":53931122786570,"sku":"HYD-TROL-055-01","price":218.99,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0748\/7127\/5786\/files\/trolmaster-wcs-9-substrate-sensor-set-default-title-1.jpg?v=1792296272","url":"https:\/\/hydrocropshop.co.uk\/products\/trolmaster-wcs-9-substrate-sensor-set","provider":"Hydro Crop Shop","version":"1.0","type":"link"}