--- product_id: 353334502 title: "Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required" brand: "yolink" price: "₩172921" currency: KRW in_stock: true reviews_count: 5 category: "Yo Link" url: https://www.desertcart.kr/products/353334502-water-leak-sensor-3-pack-lora-up-to-1-4 store_origin: KR region: South Korea --- # 1/4 mile LoRa range 5+ years battery life Fully encrypted comms Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required **Brand:** yolink **Price:** ₩172921 **Availability:** ✅ In Stock ## Summary > 💧 Stay dry, stay smart — protect your home from leaks like a pro! ## Quick Answers - **What is this?** Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required by yolink - **How much does it cost?** ₩172921 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kr](https://www.desertcart.kr/products/353334502-water-leak-sensor-3-pack-lora-up-to-1-4) ## Best For - yolink enthusiasts ## Why This Product - Trusted yolink brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **WiFi & Internet Independent:** Operates flawlessly without WiFi or internet, ensuring continuous protection even during outages or power loss. - • **Smart Alerts Wherever You Are:** Receive instant SMS, email, and push notifications so you’re always the first to know about leaks—no matter where work or life takes you. - • **Unmatched Long-Range Coverage:** LoRa tech delivers up to 1,320 feet open-air range—perfect for basements, garages, and remote spots beyond WiFi reach. - • **Seamless Smart Home Integration:** Works with Alexa, IFTTT, and Home Assistant for effortless automation and control within your connected lifestyle. - • **Set It & Forget It Installation:** Plug-and-play design lets you install sensors in seconds—no tech headaches, just instant peace of mind. ## Overview The YoLink Water Leak Sensor 3-Pack uses industrial-grade LoRa technology to provide ultra-long-range, WiFi-independent water leak detection with encrypted communication. Designed for easy installation and 5+ years of battery life, it sends instant alerts via SMS, email, and push notifications. Compatible with Alexa, IFTTT, and Home Assistant, it’s the ultimate smart home safeguard against costly water damage. ## Description Water Leak Sensor Review: It is US wifi not Uk - Works well once reset to Europe wifi but it would not connect with their European/UK hub without a fair amount of resetting and liaison with tech support. I was expecting this so was not a problem for me. Review: Does not work in UK, description not clear - The hub and temperature sensors work well and are connected immediately. I purchased the 3-pack water leak sensors but did not realise the difference between UC and EC on the labels. UC does not work in the UK; you need to buy EC. I contacted tech support, but after an initial hello, I have been ghosted! ## Features - NO WiFi WORRIES! YoLink devices communicate by LoRa, an industrial-grade protocol that provides up to ¼ mile open air range. Devices do NOT connect to your network or even to the internet; they communicate with the Hub (Not included!). Long range, obstruction penetration, no reliance on WiFi, and fully-encrypted communications provide more than most ask for from their smart home system! - SET IT & FORGET IT! Installs in seconds! The YoLink wireless Water Sensor could not be easier to install; just place near or under the equipment you wish to monitor. Suggested uses are near or under, toilets, water heaters, laundry machines, dishwashers, sinks, fish tanks, in or near sump pumps, and by any other location subject to water leaks and flooding. - EXTREME LONG RANGE! Powered by LoRa technology, the long-range yet low-power system offers the industry’s longest receiving range in the market (1/4 mile). Our long-range coverage enables its use in areas challenging for most residential Wi-Fi systems, such as basements, outdoor porch/patio areas, sheds, free-standing garages, even remote outbuildings on your property. - NO WIFI, NO INTERNET, NO POWER? NO PROBLEM! Our patented Control-D2D device-to-device pairing, over our LoRa-based wireless network, allows for devices to be paired to each other, in such a way they will continue to operate, even if WiFi is flaky, the internet goes down, or the AC power goes out! - START SMART! A YoLink hub is required for full functionality, including for the app to work, to check battery level, etc, but your hub is compatible with a growing family of smart products for home and business! Search for B09FSS95G9 for a SpeakerHub (our audio, talking hub) or B07TQLKQLJ for the original Hub. - BATTERIES INCLUDED! Two replaceable AAA batteries, good for over 5 years, are included! - AVAILABLE AS A STARTER KIT! Search for B0BFR7WJQT - Hub Not Included. Hub Sold Separately. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B083Z5Z9HM | | Battery Description | AAA | | Battery description | AAA | | Best Sellers Rank | #92,494 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #299 in Safety Sensors & Detectors | | Brand | YoLink | | Color | White | | Colour | White | | Compatible Devices | YoLink Hub | | Compatible devices | YoLink Hub | | Control Method | App | | Customer Reviews | 4.7 out of 5 stars 996 Reviews | | EU Spare Part Availability Duration | 5 Years | | Item Dimensions L x W x H | 6.4L x 6.4W x 2.5H centimeters | | Manufacturer | YoLink | | Maximum Range | 1320 Feet | | Mfr Part Number | YS7903-UC*3 | | Model Number | YS7903 | | Mounting Type | Tabletop Mount | | Number of Batteries | 6 AAA batteries required. | | Number of Items | 3 | | Number of Packs | 3 | | Power Source | Battery Powered | | Power source | Battery Powered | | Product dimensions | 6.4L x 6.4W x 2.5H centimeters | | Sensor Technology | LoRa | | UPC | 750258361643 | | Voltage | 3 Volts | ## Product Details - **Brand:** YoLink - **Colour:** White - **Compatible devices:** Smartphone - **Number of batteries:** 6 AAA batteries required. - **Product dimensions:** 6.4L x 6.4W x 2.5H centimeters ## Images ![Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required - Image 1](https://m.media-amazon.com/images/I/519l0Q74TDL.jpg) ## Questions & Answers **Q: Can you replace the batteries?** A: Yes, there are rubber tips on the 4 corners of the bottom, you can remove them and unscrew 4 screws and open the sensor, to replace two AAA batteries. The battery can run more than 5 years. You can search on YouTube video of how to change the YoLink water sensor's battery and can find the videos. Thanks! **Q: Is this a dumb proprietary system or does it ingrate with smart home technologies, ie Z-wave Zigbee etc?** A: It is not Zigbee, WiFi or Z-Wave wireless technologies, all these wireless technologies only work for short range. The YoLink system use the longest wireless range and lower power consumption. It works with the YoLink hub and can be integrate to other system through the Alexa routines, IFTTT or YoLink's API. Thanks! **Q: Do you have any water leak sensors that have audio as well as the app reminder? Or are these just app reminders?** A: These 3 pack leak sensors don't have build in audio sound. We have YoLink water leak sensor 2 which has build in sound, both them have app push notifications, emails and text message for leak alert. **Q: What frimware version do you have on these D or E? Tx** A: Mine came with 030E installed. The sensors I bought previously had 030D installed and still aren't being offered the 030E update even though they are the exact same model number. I also don't know the difference between 030D and 030E as they don't seem to publish any firmware changelog that I can find. ## Customer Reviews ### ⭐⭐⭐⭐ It is US wifi not Uk *by M***L on 9 July 2024* Works well once reset to Europe wifi but it would not connect with their European/UK hub without a fair amount of resetting and liaison with tech support. I was expecting this so was not a problem for me. ### ⭐ Does not work in UK, description not clear *by J***. on 4 February 2025* The hub and temperature sensors work well and are connected immediately. I purchased the 3-pack water leak sensors but did not realise the difference between UC and EC on the labels. UC does not work in the UK; you need to buy EC. I contacted tech support, but after an initial hello, I have been ghosted! ### ⭐⭐⭐⭐⭐ Easily the best investment I've made in several years *by H***R on 25 July 2026* These little things are one of the best investments I've made in many years. So easy to use and setup, and at a very reasonable price for what they've already saved me. I've had them maybe a month and they've already saved my butt at least twice. I installed a 4-gal booster water heater in the kitchen cabinet near my sink (not directly under the sink; you know that completely useless space in the corner of your lower kitchen cabinets? Yeah, not so useless anymore!). Not someplace one would check regular for leaks. Dummy me didn't properly tighten the pressure release attachment on top of the water heater. Well, this little guy alerted me before it became a major repair job. Thanks YoLink! BTW, I also have the temp/humidity probes in my garage fridge/freezer to alert me if one of the kids leave the door open again ;). Great products and great app. ## Frequently Bought Together - YoLink Water Leak Sensor 3-Pack, LoRa Up to 1/4 Mile Open-Air Range Smart Water Leak & Flood Detector, SMS/Text, Email & Push Notifications, w/Alexa, IFTTT, Home Assistant - YoLink Hub Required - YoLink Smart Home Starter Kit: Hub & Water Leak Sensor 4-Pack, SMS/Text, Email & Push Notifications, LoRa Up to 1/4 Mile Open-Air Range, w/Alexa, IFTTT, Home Assistant - YoLink Smart Wireless Temperature & Humidity Sensor, Wide Temp Range for Fridge, Green House, Pet Cage, App Alerts, Emails, Text/SMS alerts- Hub Required --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kr/products/353334502-water-leak-sensor-3-pack-lora-up-to-1-4](https://www.desertcart.kr/products/353334502-water-leak-sensor-3-pack-lora-up-to-1-4) --- *Product available on Desertcart South Korea* *Store origin: KR* *Last updated: 2026-09-14*