{"product_id":"ms-ws303","title":"Milesight liquid level detection at only 0.5 mm","description":"\u003cp\u003eWater detection with liquid levels as low as 0.5 mm - Replaceable 590 mAh battery with up to 5.7 years of life - Local alarm via integrated sensor buzzer - D2D protocol for direct control without the need for a gateway - NFC configuration from a smartphone without opening the device - IP67 submersible for cellars, pipes, and outdoors\u003c\/p\u003e\n\n\u003cp\u003e📋 SPECIFICATIONS:\u003cbr\u003e\n• Model: WS303\u003cbr\u003e\n• Type: Contact water leak detection sensor\u003cbr\u003e\n• Technology: Wireless LoRaWAN + Milesight D2D (Device-to-Device)\u003cbr\u003e\n• Antenna: Internal\u003cbr\u003e\n• Supported frequencies: CN470 \/ IN865 \/ RU864 \/ EU868 \/ US915 \/ AU915 \/ KR920 \/ AS923-1\u0026amp;2\u0026amp;3\u0026amp;4\u003cbr\u003e\n• Transmission power: 16 dBm (868 MHz) \/ 20 dBm (915 MHz) \/ 19 dBm (470 MHz)\u003cbr\u003e\n• Reception sensitivity: -137 dBm @ 300 bps LoRaWAN OTAA \/ ABP mode, Class A Detectable liquids Conductive liquids (water, saline solutions, conductive coolants)\u003cbr\u003e\n• Activation threshold: 0.5 mm water level on contacts\u003cbr\u003e\n• Local alarm: Integrated piezoelectric buzzer (~85 dB at 10 cm)\u003cbr\u003e\n• Remote alarm: Push notifications via Milesight IoT Cloud \/ Mobile App D2D Protocol Direct control of Milesight valves and actuators without a gateway\u003cbr\u003e\n• Configuration: NFC (Milesight Toolbox mobile app) or LoRaWAN Downlink Power supply 1 × 590 mAh CR2450 lithium battery (user-replaceable)\u003cbr\u003e\n• Estimated battery life: Up to 5.7 years (1 leak of 1 hour per week, 25 °C, laboratory conditions)\u003cbr\u003e\n• Operating temperature: -10 °C to +60 °C Relative humidity 0% to 100% (non-condensing)\u003cbr\u003e\n• Protection: IP67 (resistant to temporary immersion)\u003cbr\u003e\n• Dimensions: 63 × 63 × 14 mm Weight 36.4 g (with battery) \/ 29.8 g (without battery)\u003cbr\u003e\n• Material and color: ABS+PC housing, white Installation method 3M adhesive tape (included) or placed on a flat surface\u003cbr\u003e\n• Certifications: CE, FCC, RoHS\u003cbr\u003e\n• Compatible platforms: Milesight IoT Cloud, Milesight Development Platform, any standard LoRaWAN network server\u003cbr\u003e\n• Typical applications: Server rooms, basements, bathrooms, archives, industrial kitchens, homes, smart offices\u003c\/p\u003e\n\n\u003cp\u003e📦 INCLUDED:\u003cbr\u003e\n• 1x Milesight WS303 leak detection sensor\u003cbr\u003e• 1x 590 mAh CR2450 lithium battery (pre-installed and replaceable)\u003cbr\u003e• 1x Quick installation guide and technical documentation\u003cbr\u003e• 1x 3M adhesive for surface mounting\u003c\/p\u003e","brand":"MILESIGHT","offers":[{"title":"Default Title","offer_id":58003841909080,"sku":"MS-WS303","price":93.14,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1003\/7765\/7688\/files\/MS-WS303_c6932fcc-87d8-4506-bf62-8713f3e81254.png?v=1787171131","url":"https:\/\/elettricity.com\/en\/products\/ms-ws303","provider":"Elettricity","version":"1.0","type":"link"}