--- product_id: 14707864 title: "ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems - 1/4” Quick Connect" brand: "ispring" price: "€ 60.64" currency: EUR in_stock: true reviews_count: 10 category: "I Spring" url: https://www.desertcart.hr/products/14707864-als1-leak-detector-and-shut-off-valve-for-reverse-osmosis store_origin: HR region: Croatia --- # Instant leak detection 1/4” quick connect fitting Automatic water shut-off ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems - 1/4” Quick Connect **Brand:** ispring **Price:** € 60.64 **Availability:** ✅ In Stock ## Summary > 🛡️ Stay dry, stay worry-free — the smart shield your water system deserves! ## Quick Answers - **What is this?** ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems - 1/4” Quick Connect by ispring - **How much does it cost?** € 60.64 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/14707864-als1-leak-detector-and-shut-off-valve-for-reverse-osmosis) ## Best For - ispring enthusiasts ## Why This Product - Trusted ispring brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Compact Yet Powerful:** Small footprint (1.8 x 1.5 x 2.9 inches) fits discreetly under your sink without clutter. - • **Seamless Compatibility:** Designed exclusively for iSpring RO and under-sink filtration systems with 1/4” tubing for a perfect fit. - • **Leak-Proof Your Sanctuary:** Detects water leaks instantly to prevent costly damage and protect your home or office. - • **Lifetime Support & Warranty:** Register online for peace of mind with lifetime free tech support and manufacturer warranty. - • **Effortless Installation & Replacement:** Quick twist-open design with easy-to-replace absorbent pads keeps maintenance hassle-free. ## Overview The iSpring ALS1 Leak Detector and Shut-Off Valve is a compact, wall-mountable device designed to protect your home or business from water damage by automatically shutting off the water supply upon detecting leaks. Featuring a 1/4” quick connect fitting, it integrates seamlessly with iSpring reverse osmosis and under-sink filtration systems. Its easy-to-replace absorbent pad triggers the shut-off mechanism, while lifetime tech support and warranty ensure lasting reliability. ## Description desertcart.com: iSpring ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems - 1/4” Quick Connect : Industrial & Scientific Review: Very smart to have if you use a RO unit. - Excellent idea, you never know when your Reverse osmosis will spring a leak, Nothing is perfect if I get a leak from my RO unit this will probably save me from water damage. I had a RO unit many years ago that leaked and caused cabinet damage, this would have been great to have. The only negative I have is it does not come with replacement adsorbent tablets. If leak detector stops a leak it needs to be reset and new tablet installed. Review: Could Be Worth The Investment, But... - This item is a continuation of what I've seen on most reverse osmosis systems sold for home use. Which is they are built from cheap plastic parts. Plus, the push type of connectors and the associated plastic hoses, are notoriously known for leaking. This item has a wadded up piece of tissue paper, and when whetted, it will push up a small metal stem to shut off the water supply. But what if a leak is developed on the supply side of this leak detector? Then you still have a bad situation. Yes, this leak detector could save you a from a big headache and a large repair bill. However, the next time I will buy a whole house leak detector shut off valve, which I've seen starting at around 100 dollars. In addition, I could not find replacement tissues for sale specific for this item. I've seen a similar tissue plugs for sale on desertcart, but I'm not sure if they are a suitable replacement. As a result, it seems that this item is sold as one time use and is considered non-repairable. I don't know, because there were no instructions included. I know that it has a simple function, but at least the manufacturer could've mentioned whether or not the tissues are replaceable. Tissues are very susceptible to moisture, so it is very easy to get these wet, since they are usually located under the kitchen sink. ## Features - Rest assured when using iSpring reverse osmosis or iSpring under sink water filtration systems: The shut-off valve protects your home and business properties from costly water damage by automatically shut off the incoming water supply once the pad detects a potential water leakage - Easy to replace: Just take out the screw and twist the unit to open. The pad needs to be replaced every time it touches the water and expands - 1/4” quick connect: Fits ¼” tubings - Peace of mind customer service: Register online to activate your manufacturer warranty and life-time free tech support. We stand behind our products and if you encounter any problems with any of our products please reach out to us immediately. We are happy to help! - Work with iSpring ALS1P3 replacement pads. Please use this product ONLY with iSpring water filters. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B00NVQYR1I | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #123,051 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #92 in Leak Detection Tools | | Customer Reviews | 3.7 3.7 out of 5 stars (43) | | Date First Available | September 24, 2014 | | Finish | Yes | | Global Trade Identification Number | 00662425070206 | | Included Components | parts | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 1.44 ounces | | Item model number | ALS1 | | Manufacturer | iSpring | | Mounting Type | Wall Mount | | Part Number | ALS1 | | Product Dimensions | 1.8 x 1.5 x 2.9 inches | | Sensor Technology | Contact Sensor | | UPC | 662425070206 | ## Product Details - **Brand:** iSpring - **Color:** White - **Compatible Devices:** iSpring reverse osmosis and under sink water filtration systems - **Control Method:** Touch - **Power Source:** Battery Powered ## Images ![ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems - 1/4” Quick Connect - Image 1](https://m.media-amazon.com/images/I/51xjjxubcuL.jpg) ## Questions & Answers **Q: How do you get replacement pads?** A: They do not still replacement pads. If you call or email support they will send you a complete unit, including new pads. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Very smart to have if you use a RO unit. *by H***R on August 2, 2017* Excellent idea, you never know when your Reverse osmosis will spring a leak, Nothing is perfect if I get a leak from my RO unit this will probably save me from water damage. I had a RO unit many years ago that leaked and caused cabinet damage, this would have been great to have. The only negative I have is it does not come with replacement adsorbent tablets. If leak detector stops a leak it needs to be reset and new tablet installed. ### ⭐⭐ Could Be Worth The Investment, But... *by F***K on January 24, 2018* This item is a continuation of what I've seen on most reverse osmosis systems sold for home use. Which is they are built from cheap plastic parts. Plus, the push type of connectors and the associated plastic hoses, are notoriously known for leaking. This item has a wadded up piece of tissue paper, and when whetted, it will push up a small metal stem to shut off the water supply. But what if a leak is developed on the supply side of this leak detector? Then you still have a bad situation. Yes, this leak detector could save you a from a big headache and a large repair bill. However, the next time I will buy a whole house leak detector shut off valve, which I've seen starting at around 100 dollars. In addition, I could not find replacement tissues for sale specific for this item. I've seen a similar tissue plugs for sale on amazon, but I'm not sure if they are a suitable replacement. As a result, it seems that this item is sold as one time use and is considered non-repairable. I don't know, because there were no instructions included. I know that it has a simple function, but at least the manufacturer could've mentioned whether or not the tissues are replaceable. Tissues are very susceptible to moisture, so it is very easy to get these wet, since they are usually located under the kitchen sink. ### ⭐⭐⭐ The bigger problem is the product description makes it seem like you get two extra "tablets" but that's not the ... *by D***A on June 28, 2018* There were no instructions, which for a novice might be a problem. It's obvious the unit needs to go as close to the supply line origination as possible. The bigger problem is the product description makes it seem like you get two extra "tablets" but that's not the case as another reviewer has noted. This may be a one time use product. I bought electronic leak detectors to go under the cabinet as well and I would also recommend having a pan built for the RO unit to sit in as well. Any plumber should be able getting a pan made. ## Frequently Bought Together - iSpring all accessories (Leak Detector) - iSpring MC1 1.8-Inch x 12-Inch 100GPD Reverse Osmosis Membrane - iSpring ICEK 6M Ultra Safe Fridge Water Line Connection and Ice Maker Installation Kit for Reverse Osmosis RO Systems & Water Filters, 1/4" --- ## 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.hr/products/14707864-als1-leak-detector-and-shut-off-valve-for-reverse-osmosis](https://www.desertcart.hr/products/14707864-als1-leak-detector-and-shut-off-valve-for-reverse-osmosis) --- *Product available on Desertcart Croatia* *Store origin: HR* *Last updated: 2026-04-23*