{"product_id":"grundig-smart-wifi-water-level-sensor-tank-monitor","title":"GRUNDIG Smart WiFi Water Level Sensor \u0026 Tank Monitor. Ultrasonic Wireless Liquid Level Monitor with Remote Smartphone Alerts -- Real-Time Water, Oil, and Chemical Tank Monitoring for Home, RV, Farm, and Industrial Use","description":"\u003cp class=\"markdown-p\"\u003eStop guessing how much water, oil, or fuel is left in your tank. The Smart WiFi Water Level Sensor gives you instant, accurate liquid level readings directly on your smartphone, anytime, anywhere.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eThis ultrasonic tank monitor measures liquid levels from 0 to 1.4 meters (4 to 55 inches) with high precision. It transmits real-time data through an RF433 gateway to your home WiFi network, then delivers the information straight to the Tuya Smart or Smart Life app on your phone. Set custom high and low level alerts, and you will receive push notifications the moment your tank needs attention.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eNo more climbing onto roofs to check water tanks, no more unexpected dry runs on your RV water pump, and no more manual dipstick readings on oil tanks. This system works reliably indoors and outdoors, across a wide range of liquid types and environmental conditions.\u003c\/p\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003eKey Features\u003c\/h2\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eReal-Time Smartphone Monitoring\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eView your tank level from anywhere in the world using the Tuya Smart or Smart Life mobile app. No need to physically inspect the tank ever again.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eCustomizable High and Low Level Alerts\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eSet your own alarm thresholds. Receive instant push notifications when the liquid level reaches a critical high or low point. Avoid overflows and prevent dry running.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eUltrasonic Measuring Technology\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eNon-contact ultrasonic sensor measures liquid levels accurately from 10cm to 1.4m (4 to 55 inches). Compatible with water, diesel, oil, coolant, chemical liquids, and more.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eDual-System Architecture\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eThe system consists of two components: an ultrasonic sensor mounted on the tank and a gateway connected to your home router. The sensor communicates with the gateway wirelessly via RF433MHz, and the gateway connects to your WiFi to relay data to the cloud.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eLong-Distance Wireless Communication\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"markdown-ul\" data-level-mod=\"0\"\u003e\n\u003cli class=\"markdown-li\"\u003eSensor to Gateway (RF433MHz): Up to 300m (984ft) in open air, penetrating up to 3 walls\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eGateway to Router (WiFi): Up to 50m (164ft) in open air\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eWide Temperature and Weather Tolerance\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eOperating temperature range of -10C to 70C (14F to 158F). IP65\/IP66 waterproof rating makes it suitable for outdoor tanks, roof-mounted water tanks, and exposed installations.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eExpandable to Multiple Tanks\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eOne app can monitor up to 10 sensors simultaneously. Manage multiple water tanks, oil tanks, or chemical containers from a single dashboard.\u003c\/p\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003eHow It Works\u003c\/h2\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eStep 1: Mount the Sensor\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eInstall the ultrasonic sensor on top of your tank using the included gasket and self-tapping screws. Drill a 55mm or larger hole in the center of the tank top, place the gasket, and secure the sensor.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eStep 2: Power Up\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eConnect the sensor to the included AC\/DC power adaptor (100-240V input, 5V output). Plug the gateway into a standard wall outlet using a 5V\/1A USB adapter.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eStep 3: Connect to WiFi\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003ePress and hold the touch button on the gateway for 5 seconds until the WiFi LED flashes rapidly. Open the Tuya Smart or Smart Life app, turn on your phone's WiFi and Bluetooth, and follow the in-app instructions to add the device.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eStep 4: Monitor From Anywhere\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eOnce connected, the app displays your tank level in real time. Set your desired high and low alarm levels, and the system will notify you automatically when thresholds are reached.\u003c\/p\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cdiv class=\"markdown-table-outer-wrapper custom-scrollbar-x\"\u003e\n\u003ctable class=\"markdown-table\"\u003e\n\u003cthead class=\"markdown-thead\"\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003cth class=\"markdown-th\"\u003eSpecification\u003c\/th\u003e\n\u003cth class=\"markdown-th\"\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody class=\"markdown-tbody\"\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eModel\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eME201R\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eSensor Type\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eUltrasonic (Non-Contact)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eMeasuring Range\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003e10cm to 1.4m (4 to 55 inches)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eMeasurement Accuracy\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003e+\/- 1mm (at 25C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eSensor Material\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003ePC (Polycarbonate)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eSensor to Gateway Communication\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eRF433MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eSensor to Gateway Range\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eUp to 300m (984ft) open air, penetrates 3 walls\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eGateway to Router (WiFi)\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eUp to 50m (164ft) open air\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eWiFi Compatibility\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003e2.4GHz 802.11 b\/g\/n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eApp Compatibility\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eTuya Smart \/ Smart Life (iOS \u0026amp; Android)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003ePower Input\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003e100-240V AC, 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003ePower Output (Adaptor)\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eOperating Temperature\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003e-10C to 70C (14F to 158F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eMedium Temperature\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003e-20C to 80C (-4F to 176F)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eWaterproof Rating\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eIP65 \/ IP66\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eCertifications\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eCE, RoHS, REACH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eDisplay\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eLED screen on sensor (real-time level reading)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003ePackage Dimensions\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003e18 x 11 x 7.5 cm (7.1 x 4.3 x 3.0 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003ePackage Weight\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003e300 g (0.66 lb)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003eWhat's in the Box\u003c\/h2\u003e\n\u003cul class=\"markdown-ul\" data-level-mod=\"0\"\u003e\n\u003cli class=\"markdown-li\"\u003e1 x Ultrasonic level sensor with LED display\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003e1 x RF433 wireless gateway\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003e1 x AC\/DC power adaptor (US plug)\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003e1 x Mounting gasket\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003e1 x Set of self-tapping screws\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003e1 x User manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003eCompatible Liquids\u003c\/h2\u003e\n\u003cul class=\"markdown-ul\" data-level-mod=\"0\"\u003e\n\u003cli class=\"markdown-li\"\u003eFresh water\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eDiesel fuel\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eEngine oil\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eHydraulic oil\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eCoolant \/ antifreeze\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eChemical liquids\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eWastewater\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"markdown-p\"\u003eNote: Not recommended for viscous liquids, liquids with heavy sediment, or foam-producing liquids.\u003c\/p\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003eInstallation Overview\u003c\/h2\u003e\n\u003col class=\"markdown-ol\" data-level-mod=\"0\"\u003e\n\u003cli class=\"markdown-li\"\u003eClean the top center of your tank and attach the included gasket.\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eDrill a hole with a diameter of 55mm or greater at the marked center point.\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003ePlace the sensor over the gasket, aligned with the screw holes.\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eFasten the sensor with the self-tapping screws. Do not overtighten on curved surfaces.\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eConnect the sensor to the power adaptor.\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003ePlace the gateway near your router and power it on.\u003c\/li\u003e\n\u003cli class=\"markdown-li\"\u003eDownload the Tuya Smart or Smart Life app and pair the gateway to your WiFi network.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"markdown-p\"\u003eThe sensor comes with a built-in LED display that shows the current liquid level directly on the unit, giving you a local readout in addition to the smartphone app.\u003c\/p\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003eApplication Scenarios\u003c\/h2\u003e\n\u003cdiv class=\"markdown-table-outer-wrapper custom-scrollbar-x\"\u003e\n\u003ctable class=\"markdown-table\"\u003e\n\u003cthead class=\"markdown-thead\"\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003cth class=\"markdown-th\"\u003eScenario\u003c\/th\u003e\n\u003cth class=\"markdown-th\"\u003eBenefit\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody class=\"markdown-tbody\"\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eHome Water Tank\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eKnow your water level without climbing onto the roof\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eRV \/ Camper\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eMonitor fresh water and waste tank levels remotely\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eFarm \/ Ranch\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eTrack livestock watering tanks and fuel storage\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eIndustrial\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eMonitor chemical tanks, coolant reservoirs, and oil drums\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eMarine \/ Boat\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eCheck fuel and water tank levels from the cabin\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eRental Properties\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eAlert property owners when septic or water tanks need attention\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"markdown-tr\"\u003e\n\u003ctd class=\"markdown-td\"\u003eGenerator Fuel Tanks\u003c\/td\u003e\n\u003ctd class=\"markdown-td\"\u003eReceive low-fuel alerts before generators run dry\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003eWhy Choose This Smart Tank Monitor?\u003c\/h2\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eNo Subscription Fees\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eHardware only, one-time purchase. The Tuya Smart and Smart Life apps are free to download and use with no monthly subscription.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eIndustry-Standard Smart Platform\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eTuya Smart is one of the world's largest IoT platforms, compatible with Amazon Alexa and Google Assistant for voice control. The app supports multiple languages and is trusted by millions of users worldwide.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eBuilt for Real Conditions\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eThe sensor is designed for outdoor and industrial environments. IP65\/IP66 waterproofing, wide temperature tolerance, and corrosion-resistant PC housing mean it lasts where other sensors fail.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eLED Display Included\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eUnlike basic sensors that only show data in the app, this model features a built-in LED screen on the sensor unit itself, so you can read the level directly at the tank.\u003c\/p\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eQ: Do I need a WiFi connection for the system to work?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eA: Yes, the gateway requires a 2.4GHz WiFi connection to relay data to the app. However, the sensor and gateway communicate via RF433MHz, which works independently of your WiFi.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eQ: Can I use this sensor with an oil tank?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eA: Yes. The ultrasonic sensor works with diesel, engine oil, hydraulic oil, and many other non-corrosive liquids. It uses sound waves to measure the distance to the liquid surface and is not affected by the liquid's color or conductivity.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eQ: How many sensors can one gateway support?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eA: One gateway supports multiple sensors. One app account can manage up to 10 sensors across different tanks.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eQ: Can I use this without internet?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eA: The sensor-to-gateway communication (RF433) works without internet. However, to view data on your smartphone and receive push alerts, the gateway needs to be connected to your WiFi router with internet access. The LED display on the sensor unit itself works independently.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eQ: What size hole do I need to drill?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eA: The sensor requires a hole with a diameter of 55mm or larger on the top of the tank.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eQ: Does the sensor require calibration?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eA: The sensor is pre-calibrated and ready to use out of the box. Simply input your tank height in the app for accurate percentage readings.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eQ: Is this sensor compatible with metal tanks?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eA: Yes. The ultrasonic sensor mounts on top of the tank and measures the liquid surface from above. It works with plastic, metal, and fiberglass tanks.\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003e\u003cstrong\u003eQ: What happens if the power goes out?\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"markdown-p\"\u003eA: The sensor and gateway will reset automatically when power is restored. No manual reconfiguration needed.\u003c\/p\u003e\n\u003chr class=\"markdown-hr\"\u003e\n\u003ch2 class=\"markdown-h2\"\u003ePackage Options\u003c\/h2\u003e\n\u003cp class=\"markdown-p\"\u003eThe system is available with a US\/EU-standard power plug.\u003c\/p\u003e","brand":"Grundig-auto","offers":[{"title":"EU Standard Plug","offer_id":46061925367887,"sku":null,"price":128.0,"currency_code":"USD","in_stock":true},{"title":"US Standard Plug","offer_id":46061925400655,"sku":null,"price":128.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/9143\/8927\/files\/O1CN015W6Kg42Dn8EMcC1lc__2216884238653-0-cib.jpg?v=1784188861","url":"https:\/\/grundig-auto.com\/nl\/products\/grundig-smart-wifi-water-level-sensor-tank-monitor","provider":"Grundig-auto","version":"1.0","type":"link"}