{"product_id":"water-level-relay-module-dc12-24v-single-channel-controller","title":"Water Level Relay Module DC 12-24V Single Channel Controller","description":"\u003ch2\u003eSingle Channel Liquid Level Probe Relay Module — DC 12–24V Water Level Controller\u003c\/h2\u003e\n\u003cp\u003eTake full automated control of your water tank, sump, or pump system with this compact and reliable \u003cstrong\u003eSingle Channel Liquid Level Probe Relay Module\u003c\/strong\u003e. Designed to operate on DC 12–24V, this versatile controller supports both \u003cstrong\u003edrainage mode\u003c\/strong\u003e and \u003cstrong\u003ereplenishment (refill) mode\u003c\/strong\u003e, giving you flexible options for a wide range of liquid management applications — from irrigation and aquaculture to industrial tanks and home water systems.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Input Voltage:\u003c\/strong\u003e Compatible with DC 12V–24V power supplies for flexible installation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Operating Modes:\u003c\/strong\u003e Easily switch between drainage mode and replenishment mode to suit your application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Time Delay:\u003c\/strong\u003e Built-in adjustable delay function ensures the relay holds on or off for a customizable period after the probe detects a state change — reducing pump short-cycling and wear.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle Channel Design:\u003c\/strong\u003e Straightforward single-probe setup for simple, dependable liquid level sensing.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Easy to Install:\u003c\/strong\u003e Lightweight module that mounts easily in control panels, enclosures, or DIY setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow-Voltage Safe:\u003c\/strong\u003e Operates below 50Vac \/ 75Vdc, meeting EU LVD low-voltage safety standards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo High-Concern Chemicals:\u003c\/strong\u003e Contains no restricted high-concern substances.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow It Works\u003c\/h3\u003e\n\u003ch4\u003eDrainage Mode\u003c\/h4\u003e\n\u003cp\u003eThe relay activates as soon as water contacts the probe. When the water level drops and the probe is no longer submerged, the adjustable delay timer begins. Once the delay period expires, the relay deactivates — ideal for draining tanks or controlling drainage pumps automatically.\u003c\/p\u003e\n\n\u003ch4\u003eReplenishment Mode\u003c\/h4\u003e\n\u003cp\u003eThe relay activates when the probe runs dry (water level too low). Once water rises and contacts the probe again, the delay timer starts. After the delay period, the relay deactivates — perfect for automatically refilling tanks, reservoirs, or sumps.\u003c\/p\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInput Voltage:\u003c\/strong\u003e DC 12V – 24V\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eChannels:\u003c\/strong\u003e 1 (Single Channel)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Modes:\u003c\/strong\u003e Drainage \/ Replenishment (selectable)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDelay:\u003c\/strong\u003e Adjustable\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eEU LVD Classification:\u003c\/strong\u003e Low voltage — below 50Vac or 75Vdc\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh-Concern Chemicals:\u003c\/strong\u003e None\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e Made in China\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePackage Includes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1× Single Channel Water Level Controller Relay Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eImportant Notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eDue to lighting and screen differences, the item's color may appear slightly different from product images.\u003c\/li\u003e\n  \u003cli\u003ePlease allow 1mm–1cm differences due to manual measurement.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eLearn More About Electrical Safety\u003c\/h3\u003e\n\u003cp\u003eFor guidance on safe installation of low-voltage electrical modules and control circuits, visit the \u003ca href=\"https:\/\/www.osha.gov\/electrical\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eOSHA Electrical Safety resource page\u003c\/a\u003e.\u003c\/p\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the operating voltage range of this water level relay module?\u003c\/h4\u003e\n\u003cp\u003eA: This single channel liquid level probe relay module operates on DC 12V to 24V, making it compatible with a wide range of standard power supplies commonly used in pump control and automation systems.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the difference between drainage mode and replenishment mode?\u003c\/h4\u003e\n\u003cp\u003eA: In drainage mode, the relay turns on when water touches the probe and turns off (after a delay) once the probe is no longer submerged — ideal for emptying tanks. In replenishment mode, the relay turns on when the probe is dry and turns off (after a delay) once water reaches the probe again — perfect for automatic refilling of tanks or reservoirs.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I adjust the delay time on this controller?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. This module features an adjustable delay function, allowing you to customize the hold-on or hold-off period after a probe state change. This helps prevent rapid cycling and extends the lifespan of connected pumps and equipment.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What types of applications is this water level controller suitable for?\u003c\/h4\u003e\n\u003cp\u003eA: This relay module is well-suited for a variety of liquid level control applications including water tanks, sumps, aquariums, irrigation systems, aquaculture, industrial liquid tanks, and any DIY pump automation project requiring automatic water level management.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the operating voltage range of this water level relay module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This single channel liquid level probe relay module operates on DC 12V to 24V, making it compatible with a wide range of standard power supplies commonly used in pump control and automation systems.\"}}, {\"@type\": \"Question\", \"name\": \"What is the difference between drainage mode and replenishment mode?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"In drainage mode, the relay turns on when water touches the probe and turns off (after a delay) once the probe is no longer submerged — ideal for emptying tanks. 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This helps prevent rapid cycling and extends the lifespan of connected pumps and equipment.\"}}, {\"@type\": \"Question\", \"name\": \"What types of applications is this water level controller suitable for?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This relay module is well-suited for a variety of liquid level control applications including water tanks, sumps, aquariums, irrigation systems, aquaculture, industrial liquid tanks, and any DIY pump automation project requiring automatic water level management.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Fasteners \u0026 Electrical\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/collections\/fasteners-electrical\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"Water Level Relay Module DC 12-24V Single Channel Controller\", \"item\": \"https:\/\/kujrmc-0q.myshopify.com\/products\/water-level-relay-module-dc12-24v-single-channel-controller\"}]}\u003c\/script\u003e","brand":"Vue","offers":[{"title":"Default Title","offer_id":48750356136128,"sku":"\u003cnone\u003e","price":35.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0772\/9338\/7968\/files\/S36cd9f03dc4548fc8c4f22b87eef522bD_04341057-3edc-4778-900c-6ad4665acd49.webp?v=1786225427","url":"https:\/\/vueselect.com\/products\/water-level-relay-module-dc12-24v-single-channel-controller","provider":"Vue","version":"1.0","type":"link"}