{"id":44320,"date":"2024-03-14T04:15:11","date_gmt":"2024-03-13T17:45:11","guid":{"rendered":"https:\/\/onetemp.c2szky.ap-southeast-2.wpstaqhosting.com\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/"},"modified":"2026-10-26T13:30:34","modified_gmt":"2026-10-26T03:00:34","slug":"milesight-ws303-mini-leak-detection-wireless-sensor","status":"publish","type":"product","link":"https:\/\/www.onetemp.com.au\/nz\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/","title":{"rendered":"Milesight WS303 &#8211; Mini Leak Detection Wireless Sensor"},"content":{"rendered":"<h2>Compact Water Leak Detection Sensor \u2013 Powerful, Compact, and Reliable<\/h2>\n<p>Meet the WS303 &#8211; a <strong>mini water leak detection sensor<\/strong> that packs a powerful punch. This compact yet mighty device is designed to safeguard your property from water damage, detecting leaks and promptly <strong>transmitting alarms both locally and remotely<\/strong>.<\/p>\n<p>Compliant with the <strong>Milesight D2D protocol<\/strong>, the WS303 seamlessly<strong> links with other Milesight devices<\/strong>, creating a comprehensive network that effectively prevents unnecessary loss due to water leaks. Thanks to its wireless design, the WS303 can be <strong>easily installed in any environment<\/strong>, including smart offices, buildings, or homes.<\/p>\n<p>With the WS303, you&#8217;re always connected. Receive <strong>real-time alarms via a built-in buzzer locally<\/strong>, or <strong>stay informed remotely through a mobile app<\/strong>. When used in conjunction with the Milesight LoRaWAN\u00ae gateway and Milesight IoT Cloud, users can manage all sensor data remotely and visually, offering complete control at\u00a0your fingertips.<\/p>\n<h3>WS303: Your Compact Partner in Comprehensive Water Leak Protection<\/h3>\n<h3>Features<\/h3>\n<ul style=\"list-style-type: disc;\">\n<li>Utilises a <strong>compact<\/strong> <strong>water probe to proficiently detect<\/strong> the presence of conductive liquids.<\/li>\n<li>Features a <strong>replaceable<\/strong>,<strong> built-in 590mAh<\/strong> <strong>battery<\/strong> <strong>offering up to 5 years<\/strong> of wire-free power supply, ensuring longevity and reliability.<\/li>\n<li>Offers<strong> robust IP67 waterproof enclosure,<\/strong> making it suitable for applications in harsh environments.<\/li>\n<li>Embedded with a<strong> real-time alarm buzzer for immediate alerting<\/strong> during emergencies.<\/li>\n<li>Supports the<strong> Milesight D2D protocol,<\/strong> enabling ultra-low latency and direct control without the need for gateways.<\/li>\n<li>Equipped with <strong>NFC for seamless and straightforward configuration.<\/strong><\/li>\n<li>Provides <strong>immediate warning both locally and remotely<\/strong> for enhanced safety measures.<\/li>\n<li>Fully<strong> compliant with standard LoRaWAN\u00ae gateways and network servers,<\/strong> ensuring wide compatibility.<\/li>\n<li>Offers <strong>quick and easy management through<\/strong> the comprehensive Milesight IoT Cloud solution.<\/li>\n<\/ul>\n<h3>Quick\u00a0Response with High Sensitivity Water Leakage Detection<\/h3>\n<p>The WS303 sensor not only takes immediate action upon water leakage detection by <strong>sounding an alarm and sending a remote alert<\/strong> for prompt response and damage control, but also exhibits impeccable sensitivity. Utilising water conductivity, it can detect a <strong>minimum water level of 0.5 mm<\/strong> by forming a circuit with two small metal probes, and is even capable of detecting other conductive liquids.<\/p>\n<h3>Harnessing Milesight&#8217;s D2D Communication Protocol to Streamline Leak Control<\/h3>\n<p>Milesight&#8217;s innovative <strong>D2D (Device to Device) communication protocol<\/strong>, integrated with LoRa\u00ae, ensures impeccable coordination between different Milesight LoRaWAN\u00ae node devices, negating the necessity for a LoRaWAN\u00ae gateway. This facilitates effective water flow management quickly and securely with an impressive response time of less than a second, allowing users to control leaks before they necessitate major repairs.<\/p>\n<h3>Ensuring Protection and Reliability with Advanced Design and Power Failure Alerts<\/h3>\n<p>This sensor combines a <strong>built-in capacitor storage<\/strong> that triggers a <strong>power failure alarm<\/strong>, offering an additional layer of protection and reliability, with a design featuring <strong>gold-plated probes and stainless steel screws to prevent corrosion<\/strong>. Furthermore, its <strong>IP67-rated enclosure<\/strong> makes it versatile and suitable for various application scenarios.<\/p>\n<h3>Ultra-Low Power Consumption: Efficiency at its Best<\/h3>\n<p>Powered by a long-lasting coin cell battery, WS303 ensures <strong>up to 5 years of uninterrupted usage<\/strong>, eliminating the need for frequent battery replacements. This feature emphasises efficiency and user convenience.<\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>The WS303 is an innovative mini water leak detection sensor, designed to efficiently safeguard properties from water damage. Despite its compact size, it delivers powerful performance by promptly detecting leaks and transmitting alarms both on-site and remotely. Compatible with the Milesight D2D protocol, it can be easily integrated into any smart environment. Its real-time alerts and remote data management capabilities offer users complete control and peace of mind.<\/p>\n<h3>All LoRaWAN sensors require a gateway and software for operation. See useful links below to explore<\/h3>\n<h4>Unsure what you need? <a href=\"https:\/\/www.onetemp.com.au\/nz\/contact-us\/\" target=\"_blank\" rel=\"noopener\">Contact us or request a call back<\/a><\/h4>\n<p>&nbsp;<\/p>","protected":false},"featured_media":31505,"template":"","meta":{"_acf_changed":false,"om_disable_all_campaigns":false,"inline_featured_image":false,"_exactmetrics_skip_tracking":false,"_monsterinsights_skip_tracking":false},"product_brand":[],"product_cat":[15],"product_tag":[],"application":[376],"connectivity-output":[81,82,86],"environment":[],"instrument-type":[213,330,225],"manufacturer":[28],"measurement-input":[126,174],"class_list":["post-44320","product","type-product","status-publish","has-post-thumbnail","product_cat-products","application-cowork-series","connectivity-output-lorawan","connectivity-output-nfc","connectivity-output-wireless","instrument-type-sensors","instrument-type-smart-sensor","instrument-type-wireless-sensor","manufacturer-milesight","measurement-input-leak-detection-liquid","measurement-input-water-detection","first","instock","taxable","shipping-taxable","purchasable","product-type-simple"],"composite_virtual":false,"composite_aggregate_weight":false,"composite_layout":"","composite_add_to_cart_form_location":"","composite_editable_in_cart":false,"composite_sold_individually_context":"","composite_shop_price_calc":"","composite_components":[],"composite_scenarios":[],"bundled_by":[],"bundle_stock_status":"instock","bundle_stock_quantity":null,"bundle_virtual":false,"bundle_layout":"","bundle_add_to_cart_form_location":"","bundle_editable_in_cart":false,"bundle_sold_individually_context":"","bundle_item_grouping":"","bundle_min_size":"","bundle_max_size":"","bundle_price":[],"bundled_items":[],"bundle_sell_ids":[],"bundle_sells_title":"","bundle_sells_discount":"","acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Milesight WS303 - Mini Leak Detection Wireless Sensor - OneTemp<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.onetemp.com.au\/nz\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Milesight WS303 - Mini Leak Detection Wireless Sensor - OneTemp\" \/>\n<meta property=\"og:description\" content=\"The WS303 is an innovative mini water leak detection sensor, designed to efficiently safeguard properties from water damage. Despite its compact size, it delivers powerful performance by promptly detecting leaks and transmitting alarms both on-site and remotely. Compatible with the Milesight D2D protocol, it can be easily integrated into any smart environment. Its real-time alerts and remote data management capabilities offer users complete control and peace of mind. All LoRaWAN sensors require a gateway and software for operation. See useful links below to explore Unsure what you need? Contact us or request a call back &nbsp;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.onetemp.com.au\/nz\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/\" \/>\n<meta property=\"og:site_name\" content=\"OneTemp\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/OneTempAust\/\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-26T03:00:34+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.onetemp.com.au\/wp-content\/uploads\/2026\/10\/WS303-Mini-Leak-Detector.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1200\" \/>\n\t<meta property=\"og:image:height\" content=\"675\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"6 minutes\" \/>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Milesight WS303 - Mini Leak Detection Wireless Sensor - OneTemp","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.onetemp.com.au\/nz\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/","og_locale":"en_US","og_type":"article","og_title":"Milesight WS303 - Mini Leak Detection Wireless Sensor - OneTemp","og_description":"The WS303 is an innovative mini water leak detection sensor, designed to efficiently safeguard properties from water damage. Despite its compact size, it delivers powerful performance by promptly detecting leaks and transmitting alarms both on-site and remotely. Compatible with the Milesight D2D protocol, it can be easily integrated into any smart environment. Its real-time alerts and remote data management capabilities offer users complete control and peace of mind. All LoRaWAN sensors require a gateway and software for operation. See useful links below to explore Unsure what you need? Contact us or request a call back &nbsp;","og_url":"https:\/\/www.onetemp.com.au\/nz\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/","og_site_name":"OneTemp","article_publisher":"https:\/\/www.facebook.com\/OneTempAust\/","article_modified_time":"2026-10-26T03:00:34+00:00","og_image":[{"width":1200,"height":675,"url":"https:\/\/www.onetemp.com.au\/wp-content\/uploads\/2026\/10\/WS303-Mini-Leak-Detector.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"6 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":["WebPage","ItemPage"],"@id":"https:\/\/www.onetemp.com.au\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/","url":"https:\/\/www.onetemp.com.au\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/","name":"Milesight WS303 - Mini Leak Detection Wireless Sensor - OneTemp","isPartOf":{"@id":"https:\/\/www.onetemp.com.au\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.onetemp.com.au\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/#primaryimage"},"image":{"@id":"https:\/\/www.onetemp.com.au\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/#primaryimage"},"thumbnailUrl":"https:\/\/www.onetemp.com.au\/wp-content\/uploads\/2026\/10\/WS303-Mini-Leak-Detector.png","datePublished":"2024-03-13T17:45:11+00:00","dateModified":"2026-10-26T03:00:34+00:00","breadcrumb":{"@id":"https:\/\/www.onetemp.com.au\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/#breadcrumb"},"inLanguage":"en-NZ","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.onetemp.com.au\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/"]}]},{"@type":"ImageObject","inLanguage":"en-NZ","@id":"https:\/\/www.onetemp.com.au\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/#primaryimage","url":"https:\/\/www.onetemp.com.au\/wp-content\/uploads\/2026\/10\/WS303-Mini-Leak-Detector.png","contentUrl":"https:\/\/www.onetemp.com.au\/wp-content\/uploads\/2026\/10\/WS303-Mini-Leak-Detector.png","width":1200,"height":675},{"@type":"BreadcrumbList","@id":"https:\/\/www.onetemp.com.au\/product\/milesight-ws303-mini-leak-detection-wireless-sensor\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"","item":"https:\/\/www.onetemp.com.au\/nz"},{"@type":"ListItem","position":2,"name":"Shop","item":"https:\/\/www.onetemp.com.au\/shop\/"},{"@type":"ListItem","position":3,"name":"Milesight WS303 &#8211; Mini Leak Detection Wireless Sensor"}]},{"@type":"WebSite","@id":"https:\/\/www.onetemp.com.au\/#website","url":"https:\/\/www.onetemp.com.au\/","name":"OneTemp New Zealand","description":"","publisher":{"@id":"https:\/\/www.onetemp.com.au\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.onetemp.com.au\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-NZ"},{"@type":"Organization","@id":"https:\/\/www.onetemp.com.au\/#organization","name":"OneTemp New Zealand","url":"https:\/\/www.onetemp.com.au\/","logo":{"@type":"ImageObject","inLanguage":"en-NZ","@id":"https:\/\/www.onetemp.com.au\/#\/schema\/logo\/image\/","url":"https:\/\/www.onetemp.com.au\/wp-content\/uploads\/2025\/04\/OneTemp-Logo.jpeg","contentUrl":"https:\/\/www.onetemp.com.au\/wp-content\/uploads\/2025\/04\/OneTemp-Logo.jpeg","width":800,"height":153,"caption":"OneTemp"},"image":{"@id":"https:\/\/www.onetemp.com.au\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/OneTempAust\/","https:\/\/au.linkedin.com\/company\/onetemp-pty-ltd"]}]}},"_links":{"self":[{"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/product\/44320","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/media\/31505"}],"wp:attachment":[{"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/media?parent=44320"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/product_brand?post=44320"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/product_cat?post=44320"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/product_tag?post=44320"},{"taxonomy":"application","embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/application?post=44320"},{"taxonomy":"connectivity-output","embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/connectivity-output?post=44320"},{"taxonomy":"environment","embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/environment?post=44320"},{"taxonomy":"instrument-type","embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/instrument-type?post=44320"},{"taxonomy":"manufacturer","embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/manufacturer?post=44320"},{"taxonomy":"measurement-input","embeddable":true,"href":"https:\/\/www.onetemp.com.au\/nz\/wp-json\/wp\/v2\/measurement-input?post=44320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}