The AJAX WaterStop DN‑20 (¾”) s a smart, wireless water shutoff valve designed to prevent leaks and water damage. It integrates seamlessly with Ajax security systems, offering remote control and automation capabilities.
Power & Battery
• Battery Life: Up to 3 years with pre-installed CR123A batteries
• External Power: Supports 7.5–14 V DC external power supply (batteries serve as backup)
📡 Communication
• Protocol: Utilizes Jeweller for alarms/events and Wings for photos/firmware updates
• Range: Up to 1,100 meters in open space
🔧 Valve & Actuator
• Valve Type: RuB brass ball valve (¾” / DN 20)
• Shutoff Speed: Approximately 7 seconds
• Operating Pressure: Up to 145 psi
• Torque: Up to 8.5 N·m
🔒 Security Features
• Tamper Protection: Equipped with a tamper button and accelerometer
• Mounting: Designed for wall installation with a SmartBracket mounting panel
📱 Integration & Control
• Compatibility: Works exclusively with Ajax hubs running OS Malevich 2.16 or higher
• Control: Managed via Ajax mobile and desktop apps
🌐 Environmental & Physical
• Protection Class: IP65 (resistant to dust and water)
• Operating Temperature: –20°C to +70°C
• Dimensions: 104 × 150 × 70 mm
• Weight: Approx. 1,012 g