---
product_id: 394481802
title: "ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White"
brand: "ispring"
price: "S$58"
currency: SGD
in_stock: true
category: "I Spring"
url: https://www.desertcart.sg/products/394481802-als1-leak-detector-and-shut-off-valve-for-reverse-osmosis
store_origin: SG
region: Singapore
---

# 1/4” Quick Connect tubing fit Battery-powered alkaline sensor Automatic water shut-off on leak detection ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White

**Brand:** ispring
**Price:** S$58
**Availability:** ✅ In Stock

## Summary

> 💧 Stop leaks before they start — smart protection for your water system!

## Quick Answers

- **What is this?** ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White by ispring
- **How much does it cost?** S$58 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sg](https://www.desertcart.sg/products/394481802-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 & Discreet:** Small, sleek white design mounts easily under your sink without disrupting your space or décor.
- • **Instant Leak Defense:** Automatically stops water flow the moment a leak is detected, protecting your home and valuables from costly damage.
- • **Effortless Maintenance:** Quick-release screw and twist design make pad replacement a breeze—just swap the expandable tablet after any leak event.
- • **Seamless Compatibility:** Designed specifically for 1/4” tubing, perfectly fitting iSpring reverse osmosis and under-sink filtration systems.
- • **Trusted Support & Warranty:** Register online for lifetime free tech support and manufacturer warranty—peace of mind guaranteed.

## Overview

The iSpring ALS1 Leak Detector and Shut-Off Valve is a compact, battery-powered device that automatically halts water flow upon detecting leaks in reverse osmosis and under-sink filtration systems. Featuring a 1/4” quick connect for easy installation, it uses an expandable absorbent pad to trigger shut-off, preventing costly water damage. With simple pad replacement, lifetime tech support, and a reliable manufacturer warranty, it’s the essential safeguard for modern water filtration setups.

## Description

This Leak Stop shuts off flow to a drinking water system in the event a leak should occur. This unique device is a small up-front investment, designed to eliminate possible damage to homes and business property. When a leak occurs, the adsorbent applicator "tablet" expands to close the valve and shut off the incoming water supply. Two tablets are included with each Leak Protector. Maximum operating pressure = 100 psi

## Features

- Rest assured when using reverse osmosis or 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00NVQYR1I |
| ASIN  | B00NVQYR1I |
| Battery Description | Alkaline |
| Brand | iSpring |
| Built-In Media | parts |
| Color | White |
| Compatible Devices | iSpring reverse osmosis and under sink water filtration systems |
| Control Method | Touch |
| Customer Reviews | 3.9 3.9 out of 5 stars (39) |
| Customer reviews | 3.9 3.9 out of 5 stars (39) |
| Date First Available  | 7 November 2014 |
| Global Trade Identification Number | 00662425070206 |
| Is Discontinued By Manufacturer  | No |
| Item Type Name | with 1/4” Quick Connect |
| Item model number  | ALS1 |
| Manufacturer | iSpring |
| Manufacturer  | iSpring |
| Mfr Part Number | ALS1 |
| Model Number | ALS1 |
| Mounting Type | Wall Mount |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions  | 4.57 x 3.81 x 7.37 cm; 41 g |
| Sensor Technology | Contact Sensor |
| UPC | 662425070206 |
| Unit Count | 1 Count |

## Product Details

- **Battery description:** Alkaline
- **Brand:** iSpring
- **Colour:** White
- **Compatible devices:** iSpring reverse osmosis and under sink water filtration systems
- **Power source:** Corded Electric

## Images

![ALS1 Leak Detector and Shut-Off Valve for Reverse Osmosis and Under Sink Water Filtration Systems with 1/4” Quick Connect, White - 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.

## 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"

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**Shop now:** [https://www.desertcart.sg/products/394481802-als1-leak-detector-and-shut-off-valve-for-reverse-osmosis](https://www.desertcart.sg/products/394481802-als1-leak-detector-and-shut-off-valve-for-reverse-osmosis)

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*Product available on Desertcart Singapore*
*Store origin: SG*
*Last updated: 2026-10-19*