{"product_id":"xh-m203-automatic-water-level-controller-12v-relay-pump-switch-module","title":"XH-M203 Automatic Water Level Controller 12V Relay Pump Switch","description":"\u003ch2\u003eXH-M203 Full-Automatic Water Level Controller – 12V DC\/AC\u003c\/h2\u003e\n\u003cp\u003eTake full control of your water management system with the \u003cstrong\u003eXH-M203 Full-Automatic Water Level Controller\u003c\/strong\u003e. This compact, reliable module automatically monitors and regulates water levels in tanks, reservoirs, pools, and irrigation setups — turning your pump on or off without any manual intervention. Whether you're building a DIY water automation project or upgrading an existing system, the XH-M203 delivers consistent, hands-free performance.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFully Automatic Operation:\u003c\/strong\u003e Automatically controls a pump or relay based on detected water level — no manual switching needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Voltage Compatibility:\u003c\/strong\u003e Supports both AC and DC 12V supply voltage, making it versatile for a variety of setups.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature Range:\u003c\/strong\u003e Rated for -40°C to +85°C, suitable for indoor and outdoor environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDIY Kit Format:\u003c\/strong\u003e Comes as a DIY kit, perfect for hobbyists, makers, and electronics enthusiasts who want a customizable solution.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRelay Output:\u003c\/strong\u003e Built-in relay switch output drives pumps and solenoid valves directly.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Module Design:\u003c\/strong\u003e Small footprint makes it easy to integrate into enclosures, control panels, or custom builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCustomizable Configuration:\u003c\/strong\u003e Adjustable trigger levels allow you to set your own high\/low water thresholds.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eXH-M203\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC\/DC 12V\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePackage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIY Kit\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRelay Switch\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × XH-M203 Water Level Controller Module (DIY Kit)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003ePerfect For\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eWater tank automation (home, garden, agriculture)\u003c\/li\u003e\n  \u003cli\u003eSump pump control systems\u003c\/li\u003e\n  \u003cli\u003eAquarium and fish pond management\u003c\/li\u003e\n  \u003cli\u003eIrrigation and hydroponics projects\u003c\/li\u003e\n  \u003cli\u003eDIY electronics and maker projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLooking for more components for your electronics projects? Check out our \u003ca href=\"\/products\/round-aluminum-wire-diy-jewelry-making-1mm-3mm\"\u003eRound Aluminum Wire for DIY Projects\u003c\/a\u003e or browse our \u003ca href=\"\/products\/ccb-flat-round-spacer-beads-diy-jewelry-making\"\u003eCCB Flat Round Spacer Beads for DIY Making\u003c\/a\u003e for additional crafting and making supplies.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What does the XH-M203 Water Level Controller do?\u003c\/h4\u003e\n\u003cp\u003eA: The XH-M203 is a fully automatic water level controller module that monitors water levels in a tank or reservoir and automatically activates or deactivates a connected pump or relay switch when the water reaches preset high or low thresholds — completely hands-free.\u003c\/p\u003e\n\u003ch4\u003eQ: What voltage does the XH-M203 Water Level Controller require?\u003c\/h4\u003e\n\u003cp\u003eA: The XH-M203 operates on both AC and DC 12V power supply, making it compatible with a wide range of standard power adapters and control systems used in DIY and home automation projects.\u003c\/p\u003e\n\u003ch4\u003eQ: Can I use the XH-M203 module for outdoor or garden water systems?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. With an operating temperature range of -40°C to +85°C, the XH-M203 Water Level Controller is well-suited for outdoor environments including garden irrigation systems, outdoor tanks, and agricultural water management setups.\u003c\/p\u003e\n\u003ch4\u003eQ: Is the XH-M203 suitable for beginners in electronics?\u003c\/h4\u003e\n\u003cp\u003eA: The XH-M203 comes as a DIY kit and is designed with makers and hobbyists in mind. Basic electronics knowledge is helpful for installation, but its straightforward relay-based design makes it accessible for intermediate DIY enthusiasts building water automation systems.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What does the XH-M203 Water Level Controller do?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The XH-M203 is a fully automatic water level controller module that monitors water levels in a tank or reservoir and automatically activates or deactivates a connected pump or relay switch when the water reaches preset high or low thresholds — completely hands-free.\"}}, {\"@type\": \"Question\", \"name\": \"What voltage does the XH-M203 Water Level Controller require?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The XH-M203 operates on both AC and DC 12V power supply, making it compatible with a wide range of standard power adapters and control systems used in DIY and home automation projects.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use the XH-M203 module for outdoor or garden water systems?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. 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