{"product_id":"smfy-ztulss","title":"Tuya Zigbee Ultrasonic Liquid Level Sensor – Accurate Water Tank Monitoring ","description":"\u003c!-- SmartifyIQ | Tuya Zigbee Ultrasonic Liquid Level Monitor Sensor (WL-872WZ) --\u003e\n\u003cstyle\u003e\n    :root{\n      --brand:#65afe5;\n      --brand-2:#3a97e6;\n      --ink:#111827;\n      --muted:#6b7280;\n      --line:#e5e7eb;\n      --soft:#f8fafc;\n      --ok:#16a34a;\n      --warn:#f59e0b;\n      --danger:#ef4444;\n      --radius:16px;\n    }\n    .sf-wrap{max-width:980px;margin:0 auto;}\n    .sf-hero{\n      background:linear-gradient(135deg, rgba(101,175,229,.16), rgba(58,151,230,.06));\n      border:1px solid rgba(101,175,229,.30);\n      border-radius:var(--radius);\n      padding:18px 18px 14px;\n      box-shadow:0 10px 30px rgba(17,24,39,.06);\n    }\n    .sf-title{margin:.1rem 0 .35rem;font-size:1.55rem;font-weight:800;letter-spacing:.2px;}\n    .sf-sub{margin:0 0 .9rem;color:var(--muted);font-size:1.02rem;}\n    .sf-badges{display:flex;flex-wrap:wrap;gap:8px;margin:.25rem 0 .2rem;}\n    .sf-badge{\n      display:inline-flex;align-items:center;gap:8px;\n      padding:.28rem .7rem;border-radius:999px;\n      border:1px solid var(--line);\n      background:#fff;font-size:.92rem;\n    }\n    .sf-badge i{display:inline-block;width:10px;height:10px;border-radius:999px;background:var(--brand);}\n    .sf-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:14px;margin:14px 0;}\n    @media (max-width:900px){.sf-grid{grid-template-columns:1fr;}}\n    .sf-card{\n      background:#fff;border:1px solid var(--line);\n      border-radius:var(--radius);padding:14px 14px 10px;\n      box-shadow:0 10px 24px rgba(17,24,39,.05);\n    }\n    .sf-h3{margin:.2rem 0 .6rem;font-size:1.15rem;font-weight:800;}\n    .sf-ul{margin:.2rem 0 0;padding-inline-start:1.15rem;}\n    .sf-ul li{margin:.28rem 0;color:var(--ink);}\n    .sf-note{\n      border-radius:14px;padding:12px 12px;\n      border:1px solid rgba(245,158,11,.35);\n      background:rgba(245,158,11,.10);\n      color:#7c2d12;\n      margin:12px 0 0;\n    }\n    .sf-danger{\n      border-radius:14px;padding:12px 12px;\n      border:1px solid rgba(239,68,68,.35);\n      background:rgba(239,68,68,.10);\n      color:#7f1d1d;\n      margin:12px 0 0;\n    }\n    .sf-table-wrap{overflow-x:auto;margin:.5rem 0 0;}\n    .sf-table{width:100%;border-collapse:collapse;font-size:.96rem;min-width:620px;}\n    .sf-table th{\n      background:var(--soft);\n      border:1px solid var(--line);\n      padding:.65rem;text-align:center;white-space:nowrap;\n    }\n    .sf-table td{\n      border:1px solid var(--line);\n      padding:.65rem;text-align:center;\n    }\n    .sf-kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:10px}\n    @media (max-width:800px){.sf-kpis{grid-template-columns:1fr;}}\n    .sf-kpi{\n      background:linear-gradient(180deg,#fff, rgba(101,175,229,.06));\n      border:1px solid rgba(101,175,229,.22);\n      border-radius:14px;padding:12px;\n    }\n    .sf-kpi b{display:block;font-size:1.05rem;margin-bottom:4px}\n    .sf-kpi span{color:var(--muted);font-size:.95rem}\n    .sf-steps{counter-reset:step;margin:.2rem 0 0;padding:0;list-style:none}\n    .sf-steps li{\n      counter-increment:step;\n      display:flex;gap:10px;align-items:flex-start;\n      padding:.55rem .55rem;border-radius:14px;\n      border:1px dashed rgba(101,175,229,.35);\n      background:rgba(101,175,229,.06);\n      margin:.5rem 0;\n    }\n    .sf-steps li:before{\n      content:counter(step);\n      width:26px;height:26px;border-radius:999px;\n      background:var(--brand);color:#fff;\n      display:flex;align-items:center;justify-content:center;\n      font-weight:800;flex:0 0 auto;\n      margin-top:2px;\n    }\n    .sf-footer{margin-top:10px;color:var(--muted);font-size:.92rem}\n    .sf-pill{\n      display:inline-block;padding:.2rem .55rem;border-radius:999px;\n      border:1px solid rgba(101,175,229,.35);\n      background:rgba(101,175,229,.08);\n      color:#0b4b75;font-weight:700;font-size:.9rem;\n    }\n  \u003c\/style\u003e\n\u003cdiv style=\"font-family: Tajawal,system-ui,-apple-system,Segoe UI,Roboto,'Noto Sans Arabic',Arial; line-height: 1.9; color: #111827; text-align: right;;text-align:left;direction:ltr\" lang=\"ar\"\u003e\n\n\u003cdiv class=\"sf-wrap\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003c!-- HERO --\u003e\n\u003cdiv class=\"sf-hero\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv class=\"sf-title\" style=\";text-align:left;direction:ltr\"\u003e Tuya Zigbee Ultrasonic Liquid Level Sensor – Accurate Water Tank Monitoring\u003c\/div\u003e\n\n\u003cdiv class=\"sf-sub\" style=\";text-align:left;direction:ltr\"\u003e Monitor the water\/liquid level inside the tank directly from \u003cspan class=\"sf-pill\"\u003ethe Tuya Smart \/ Smart Life\u003c\/span\u003e app with high\/low level alerts, and a measurement range of up to \u003cb\u003e5 meters\u003c\/b\u003e .  \u003cbr\u003e\u003cb\u003eImportant:\u003c\/b\u003e This version works via \u003cb\u003eZigbee 3.0\u003c\/b\u003e and requires \u003cb\u003ea Zigbee Gateway\u003c\/b\u003e .\u003c\/div\u003e\n\n\u003cdiv class=\"sf-badges\" style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cspan class=\"sf-badge\"\u003e\u003ci\u003e\u003c\/i\u003eZigbee 3.0\u003c\/span\u003e \u003cspan class=\"sf-badge\"\u003e\u003ci\u003e\u003c\/i\u003eRange 0.1–5m\u003c\/span\u003e \u003cspan class=\"sf-badge\"\u003e\u003ci\u003e\u003c\/i\u003eAccuracy ±0.02m\u003c\/span\u003e \u003cspan class=\"sf-badge\"\u003e\u003ci\u003e\u003c\/i\u003eDC power 5V\/1A\u003c\/span\u003e \u003cspan class=\"sf-badge\"\u003e\u003ci\u003e\u003c\/i\u003eUpper\/lower level alerts\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sf-kpis\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv class=\"sf-kpi\" style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eInstant View +\u003c\/b\u003e \u003cspan\u003eApp History displays ratio\/depth and level status with a graph (day\/month\/year).\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sf-kpi\" style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eSuitable for tanks:\u003c\/b\u003e \u003cspan\u003ehousehold tanks, gardens, rooftop\/ground tanks, liquid storage (subject to installation conditions).\u003c\/span\u003e\n\n\u003c\/div\u003e\n\n\u003cdiv class=\"sf-kpi\" style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eSmart alerts\u003c\/b\u003e \u003cspan\u003e: Full\/low alert according to settings within the app.\u003c\/span\u003e \n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c!-- GRID --\u003e\n\u003cdiv class=\"sf-grid\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003c!-- FEATURES --\u003e\n\u003cdiv class=\"sf-card\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv class=\"sf-h3\" style=\";text-align:left;direction:ltr\"\u003e What makes this sensor special?\u003c\/div\u003e\n\n\u003cul class=\"sf-ul\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e \n\u003cb\u003eUltrasonic measurement\u003c\/b\u003e : Measures the distance to the liquid surface from the top of the tank and converts it to a level\/depth value.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eHigh\/Low Alerts\u003c\/b\u003e : Monitor the status (Normal \/ Full Alarm \/ Low Alarm) according to the alert limits you define.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eMonitor from anywhere\u003c\/b\u003e : via the Tuya Smart or Smart Life app (with an internet-connected Zigbee gateway).\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eSetup button (Touch Key)\u003c\/b\u003e : Press and hold for \u003cb\u003e5 seconds\u003c\/b\u003e to enter setup\/pairing mode.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eLED status light\u003c\/b\u003e :\n\u003cul style=\"margin-top: .25rem;;text-align:left;direction:ltr\" class=\"sf-ul\"\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e Setting mode: LED flashes rapidly.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e Connected: LED steady (ON).\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e Off: LED turns off slowly\/slow flashing.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv class=\"sf-note\" style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eImportant note before purchasing:\u003c\/b\u003e \u003cb\u003eA Zigbee gateway\u003c\/b\u003e is required for this sensor to work with the app. (Gateway separate from sensor) \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c!-- USE CASES --\u003e\n\u003cdiv class=\"sf-card\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv class=\"sf-h3\" style=\";text-align:left;direction:ltr\"\u003eSuggested Uses (Use Cases)\u003c\/div\u003e\n\n\u003cul class=\"sf-ul\" style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cli style=\";text-align:left;direction:ltr\"\u003eA rooftop\/ground water tank to check the fill level without having to go up and inspect it.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e Gardens and irrigation: Warning when water is running low.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e Liquid storage tanks\/stores (water or similar liquids) for level monitoring.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e Multiple homes or projects: Tracking multiple tanks from the same app.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv style=\"margin-top: 12px;;text-align:left;direction:ltr\" class=\"sf-h3\"\u003e Box contents (as shown in the pictures)\u003c\/div\u003e\n\n\u003cul class=\"sf-ul\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e Ultrasonic level sensor.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e Cable\/connecting wires.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e \u003cspan\u003eDC 5V\u003c\/span\u003e power adapter.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv class=\"sf-footer\" style=\";text-align:left;direction:ltr\"\u003e Note: Box contents may vary depending on the manufacturer\/supplier batch. \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c!-- SPECS TABLE --\u003e\n\u003cdiv class=\"sf-card\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv class=\"sf-h3\" style=\";text-align:left;direction:ltr\"\u003e Technical specifications\u003c\/div\u003e\n\n\u003cdiv class=\"sf-table-wrap\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003ctable class=\"sf-table\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003ctbody\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Product Name\u003c\/th\u003e\n\n\u003ctd\u003e Tuya Zigbee Liquid Level Monitor Sensor\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Model\u003c\/th\u003e\n\n\u003ctd\u003e WL-872WZ\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e The app\u003c\/th\u003e\n\n\u003ctd\u003e Tuya Smart App \/ Smart Life App\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Material\u003c\/th\u003e\n\n\u003ctd\u003e PC\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Warranty (according to supplier specifications)\u003c\/th\u003e\n\n\u003ctd\u003e 1 year\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Energy\u003c\/th\u003e\n\n\u003ctd\u003e \u003cspan\u003eDC 5V \/ 1A\u003c\/span\u003e\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Contact\u003c\/th\u003e\n\n\u003ctd\u003e Zigbee 3.0 \u003cb\u003e(requires Zigbee Gateway)\u003c\/b\u003e\n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n \u003cth\u003eOperating temperature\u003c\/th\u003e\n\n\u003ctd\u003e \u003cspan\u003e-20°C ~ +70°C\u003c\/span\u003e\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Level measurement range\u003c\/th\u003e\n\n\u003ctd\u003e \u003cspan\u003e0.1m ~ 5m\u003c\/span\u003e\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Installation height\u003c\/th\u003e\n\n\u003ctd\u003e Maximum \u003cspan\u003e5m\u003c\/span\u003e\n\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Accuracy\u003c\/th\u003e\n\n\u003ctd\u003e \u003cspan\u003e±0.02m\u003c\/span\u003e\n\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e Touch button\u003c\/th\u003e\n\n\u003ctd\u003e Hold for \u003cspan\u003e5\u003c\/span\u003e seconds\u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\u003ctr\u003e\n\n\u003cth\u003e LED indicator\u003c\/th\u003e\n\n\u003ctd style=\"text-align: right;\"\u003e 1) Setting: Quick flash\u003cbr\u003e 2) Connected: Constant lighting\u003cbr\u003e 3) Offline: Slow lighting\/gradual turning off \u003c\/td\u003e\n\n\n\u003c\/tr\u003e\n\n\n\u003c\/tbody\u003e\n\n\n\u003c\/table\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c!-- INSTALLATION --\u003e\n\u003cdiv style=\"margin-top: 14px;;text-align:left;direction:ltr\" class=\"sf-card\"\u003e\n\n\u003cdiv class=\"sf-h3\" style=\";text-align:left;direction:ltr\"\u003e Important installation notes (to ensure a correct reading)\u003c\/div\u003e\n\n\u003col class=\"sf-steps\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eMount the sensor vertically on top of the tank\u003c\/b\u003e so that the ultrasonic sensor is facing the water surface directly.\u003c\/div\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eKeep away from the edges\/inner walls\u003c\/b\u003e : Installing the sensor too close to the tank wall\/barrier may cause \u003cb\u003ea pseudo-echo and\u003c\/b\u003e inaccurate readings.\u003c\/div\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv style=\";text-align:left;direction:ltr\"\u003e \n\u003cb\u003eDo not place obstructions within the measurement area\u003c\/b\u003e (such as a tube\/float\/wire) within the “reflective zone” in front of the sensor.\u003c\/div\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eThe transmission angle is approximately ±15°\u003c\/b\u003e ; therefore, the water surface must be within the transmission cone without obstructions.\u003c\/div\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eApproximate requirements for the diameter of the measuring area (D) based on the height of the tank (H)\u003c\/b\u003e :\n\u003cul style=\"margin-top: .35rem;;text-align:left;direction:ltr\" class=\"sf-ul\"\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cspan\u003eH = 4m\u003c\/span\u003e ⇒ \u003cspan\u003eD \u0026gt; 2m\u003c\/span\u003e is preferred\n\n\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cspan\u003eH = 3m\u003c\/span\u003e ⇒ \u003cspan\u003eD \u0026gt; 1.6m\u003c\/span\u003e is preferred\n\n\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cspan\u003eH = 2m\u003c\/span\u003e ⇒ \u003cspan\u003eD \u0026gt; 1.1m\u003c\/span\u003e is preferred\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cdiv style=\";text-align:left;direction:ltr\"\u003e\n\n \u003cb\u003eThe opening\u003c\/b\u003e : A mounting opening \u003cb\u003elarger than 55 mm\u003c\/b\u003e is required (as per the drawing).\u003c\/div\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ol\u003e\n\n\u003cdiv class=\"sf-danger\" style=\";text-align:left;direction:ltr\"\u003e \n\u003cb\u003eElectrical warning:\u003c\/b\u003e The device operates on \u003cspan\u003eDC 5V\/1A\u003c\/span\u003e . Use a good power adapter, keep the wires away from moisture, and ideally have installation performed by a technician if necessary. \u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\u003c!-- HOW IT WORKS --\u003e\n\u003cdiv style=\"margin-top: 14px;;text-align:left;direction:ltr\" class=\"sf-card\"\u003e\n\n\u003cdiv class=\"sf-h3\" style=\";text-align:left;direction:ltr\"\u003e How does it work within the application?\u003c\/div\u003e\n\n\u003cul class=\"sf-ul\" style=\";text-align:left;direction:ltr\"\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e Displays \u003cb\u003eliquid percentage\/depth\u003c\/b\u003e and level status (Normal \/ Upper Alarm \/ Lower Alarm).\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e You can set \u003cb\u003ea maximum and minimum limit\u003c\/b\u003e for sending alerts.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e \u003cb\u003eThe level change chart\u003c\/b\u003e is displayed for review and follow-up.\u003c\/li\u003e\n\n\u003cli style=\";text-align:left;direction:ltr\"\u003e It is possible to add more than one sensor within the same account.\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003cdiv class=\"sf-footer\" style=\";text-align:left;direction:ltr\"\u003e Note: Because of the \u003cb\u003eZigbee\u003c\/b\u003e connection, the Zigbee gateway must be located at home\/site and connected to the internet in order to monitor remotely.\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e\n\n\n\u003c\/div\u003e","brand":"Tuya","offers":[{"title":"Default Title","offer_id":50983279296810,"sku":"SMFY-ZTULSS","price":68000.0,"currency_code":"IQD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0889\/7504\/9002\/files\/357.png?v=1766490211","url":"https:\/\/smartifyiq.com\/en\/products\/smfy-ztulss","provider":"SMARTIFY","version":"1.0","type":"link"}