The Ajax WaterStop Jeweller is a wireless valve controller designed to protect your home from flooding by automatically shutting off the water supply. It uses a ¾" RuB valve with BSPP threads and connects to compatible hubs like the Hub 2 or Hub Hybrid via the encrypted Jeweller protocol, which allows for a wireless range of up to 1,100 meters in open areas. You can manage the device through the Ajax app, a physical button on the enclosure, or a manual lever on the mount for immediate control. This white device is powered by four pre-installed CR123A batteries that can last up to three years, though an external 7.5–14 V power source is also available. To ensure the mechanism remains functional over time, you can set up preventive maintenance to automatically open and close the valve every 7, 30, or 90 days. The system is built to handle pressures up to 10 bar, with the valve itself capable of operating in temperatures ranging from -20°C to +170°C. For added security, the unit includes a tamper switch and both LED and mechanical indicators to show the current valve status. The package comes complete with the electric actuator, RuB valve, and various mounting options, including an anti-sabotage locker, making it a reliable choice for anyone wanting to integrate automated leak protection into their smart home setup.