DROP Leak Detector Kit: Smart Valve (Fits 3/4" & 1"), Hub, & 2 Leak Detectors
The DROP Leak Detector System (D-HPS-K1) comes complete with 3/4" NPT and 1" NPT adapters, making it versatile and ready to fit the most common residential main water lines. Designed to be installed right after the water meter, it eliminates the constant worry of hidden leaks, burst pipes, and unexpected water damage so you can leave home with complete confidence.
What's in the Box
1× DROP Smart Shutoff Valve (3/4" & 1" Adapters)
1× DROP Hub Control Center
2× Wireless Leak Detectors
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Power Adapters & Hardware
Key Features
Complete Home Leak Protection System
The system includes a DROP Valve (includes 3/4" and 1" adapters), DROP Hub, and two Leak Detectors, offering comprehensive coverage and alerts for your home. The Valve automatically shuts off the water supply as soon as a leak is detected, the Hub acts as the central control unit, and the Leak Detectors monitor high-risk areas. Together, these features create a smart, efficient solution to safeguard your home from water-related disasters.
Advanced Water Flow and Pressure Monitoring
Equipped with advanced flow meters and pressure sensors, the system is designed to monitor water usage with precision. It can detect a wide range of issues, from continuous flow and leaky toilets to even the tiniest faucet drips that might otherwise go unnoticed.
Battery Backup and Manual Bypass
Stay protected during power outages with the reliable 9V battery backup, which keeps your system running smoothly when electricity is unavailable. Additionally, the system comes equipped with a convenient manual bypass feature, allowing you to maintain uninterrupted water flow even during maintenance or servicing.
Backflow Prevention
The Home Protection Valve is designed with built-in backflow prevention, ensuring that water flows in the correct direction while safeguarding your plumbing system from contamination. This added feature provides an extra layer of safety, protecting your home and ensuring clean, reliable water for you and your family.
The DROP App
Manage your home’s entire water security system from anywhere with The DROP App. Monitor real-time consumption, adjust valve settings remotely, and grant access to family members or property managers with a single tap.
- Instant Push & Text Alerts: Get immediate notifications for active leaks, continuous flow, running toilets, and power outages.
- Environmental Monitoring: Stay ahead of freezing risks with built-in high/low temperature warnings.
- System Health Tracking: Receive timely reminders for battery replacements, filter changes, and valve status.
- Multi-Property Ready: Easily toggle between your primary residence, vacation home, or rental properties in one unified dashboard.
Read more installation and troubleshooting tips.
Product Details
- Pipe Sizing & Fit: Includes adapters for both 3/4 inch and 1 inch main water lines
- Built-in backflow prevention and leak detection for enhanced home protection
- Manual system bypass with a 9V battery backup
- Receive leak notifications and system information via texts, emails, or push notifications
- Effortlessly monitor and manage water shut-off remotely using the DROP App
- 120 Volts AC 12V DC Power Supply (supplied)
- Enjoy peace of mind with a comprehensive 5-year warranty included
DROP Leak Detector is a leading brand in the smart water management industry, known for its innovative and comprehensive solutions to prevent water damage in homes.
Our Expert Review: DROP Leak Detector System (D-HPS-K1) - Valve, Hub, & 2 Detectors
Summary
The DROP Leak Detector System (D-HPS-K1) is the most complete, subscription-free, and resilient smart water solution available today. Unlike systems that rely solely on flow monitoring, DROP offers dual-detection, using its main valve (equipped with 3/4" and 1" adapters) and included wireless leak detectors, giving you comprehensive, instant coverage. The core strength of the DROP system is its reliability, guaranteed by its dedicated internal network and a class-leading 5-year warranty right out of the box. For any homeowner seeking maximum protection and minimal ongoing fuss, this system is an absolute winner.
Read the Review Read Less Review
Performance: 5/5 
DROP offers every method of leak detection. The valve's built-in flow meter monitors for continuous flow and leaky toilets, while the proactive Slow Leak Test pressure-checks the system for pinhole leaks overnight. The included Leak Detectors provide instant, spot-on detection at high-risk areas (like water heaters), triggering an immediate water shutoff. Crucially, this shutoff function works using the proprietary DROPLink network, meaning it operates even if your home internet is down.
User Experience: 4/5 
Installation, like all whole-house shutoff valves, requires a professional, which is an added cost. The valve can be oriented in a few directions allowing for ease of installation. The Hub and Leak Detectors are easy to set up and place. The included battery backup ensures the system stays online during power outages. The mobile app provides necessary monitoring and remote control, I personally think the app needs some polishing, but once you learn it and know where to looks it is solid overall. You can also add a ton of Leak Detectors, up to 32, to get under every sink and area of your house you are concerned about.
Quality: 5/5
The quality is awesome, earning a perfect score. The 5-Year Limited Warranty on the Valve and Hub is included, not an extra cost, demonstrating a commitment to long-term reliability that is unmatched in this category. The components are built with durable materials, and the fact that the crucial leak-detection-to-shutoff sequence works via its dedicated DROPLink signal provides superior functional quality over Wi-Fi-dependent systems.
Value: 4.5/5 
While the upfront cost for the kit plus professional installation is high, the D-HPS-K1 kit offers the best out-of-the-box value. It includes the Valve with 3/4" & 1" adapters, the Hub, two leak detectors, and 9V battery backup, accessories often sold separately by competitors. The included 5-year warranty eliminates the need for expensive subscriptions, resulting in a significantly lower Total Cost of Ownership (TCO) compared to alternative premium systems. You pay for peace of mind, and DROP delivers the most comprehensive package for that price.
Final Verdict
The DROP Leak Detector System (D-HPS-K1) is the ultimate choice for homeowners seeking resilient, no-compromise water damage prevention. Its offline functionality, dual-detection methods, and industry-leading warranty make it the best long-term security blanket for your home's plumbing. While the initial investment requires a qualified plumber, the long-term savings in insurance discounts, avoided water bills, and—most importantly—prevented water damage, make this system highly recommended.
Pro Tip: Place one of the included Leak Detectors with the optional sensing cable next to your water heater or washing machine first. These are two of the highest-risk appliances for catastrophic failures.
Additional Details
- Brand: DROP
- MPN: D-HPS-K1
- Pipe Sizing: Fits 3/4" and 1" Main Lines (adapters included)
- Connections/Fit: Valve installs inline on the main cold-water line; Hub requires internet; detectors pair wirelessly with Hub
- Connectivity: Ethernet / WiFi-enabled system bridge
- Included: (1) DROP shutoff valve with 3/4" & 1" adapters, (1) DROP Hub, (2) leak detectors with sensing cables; power supplies/mounting hardware
Frequently Asked Questions
️ Will this fit my main water line, and who should install it?
Yes, it will fit standard residential pipes. The valve comes with adapters for both 3/4" and 1" NPT main lines. While setting up the wireless Hub and app is completely DIY-friendly, the shutoff valve must be cut directly into your incoming main cold water line, we recommend having a licensed plumber perform the pipe installation.
⚡ Will the system still work during power or internet outages?
Yes! Protection stays active offline. The valve includes a 9V battery backup to drive the shutoff mechanism during power loss, and a manual bypass allows hand operation anytime. Furthermore, local communications between the Hub, detectors, and valve run on a dedicated DROPLink radio network, meaning automatic leak shutoffs execute instantly even if your home Wi-Fi or internet goes down entirely.
Are there any monthly subscription fees for app alerts?
No. Zero monthly fees. Using the DROP App, receiving remote push/text notifications, monitoring water consumption, and managing settings are all 100% free with no recurring costs.
How do the valve and detectors work together to catch leaks?
The system utilizes dual-detection technology. The wireless DROP Leak Detectors sit near high-risk zones (like water heaters, washing machines, and under sinks) to trigger an immediate shutoff upon contacting water. Simultaneously, the main DROP Protection Valve uses internal flow meters and pressure sensors to track consumption patterns, identifying continuous micro-drips, running toilets, or sudden pipe bursts across the entire home.
What role does the DROP Hub play in the system?
The DROP Hub serves as the central brain of your smart water system. It manages local communication between all paired valves and detectors, bridges the system to your local Wi-Fi network, and coordinates instant alerts to your smartphone.
Want to learn more about smart shutoff systems? Read our article, Your Home's Best Defense: Is a Smart Water Shutoff System Worth It?
