Leak Stopper and Filter Life Monitor incl. Adaptors

Smart protection for your kitchen, cabinetry, and water filtration system.

The AS-420 is a compact leak detector and leak controller designed to protect your home from costly water damage while helping you stay on top of filter changes. It’s an ideal safety upgrade for any undersink water filter or reverse osmosis water filter system, offering peace of mind even when you’re not home.

Key Benefits and Features:

• Automatic Water Shut-Off: Instantly shuts off the water supply via a solenoid valve when a leak is detected – stopping damage before it starts.
• Ultra-Sensitive Leak Detection: Low-profile metal sensors detect even small amounts of water inside cupboards.
• Audible & Visual Alerts: Alarm sounds and a blue LED warning light activates as soon as moisture is detected.
• Filter Life Monitor Built-In: Tracks cartridge lifespan with an easy traffic-light indicator, so you never forget a filter change.
• Ideal for Undersink Installations
• Battery-Operated Safety: Runs on a 9V battery and automatically shuts off water if the battery fails.
• Flexible Installation Options: Can be installed on the ministop valve or directly on the inlet line to isolate the filtration system only.
• Endorsed by Insurance Companies
• Filter Life Indicator: Green (filter ok), Orange (filter change coming soon), Red + Alarm (filter expired, replace immediately)

Specifications:

Maximum Pressure: Approx. 125 PSI
Connection Type: 1/2″ BSP Male & Female Tee
Sensor Cable Length: 1.5 metre
Power Supply: 9V alkaline battery

View Installation Instructions