Ajax WaterStop is a wireless smart shut‑off valve kit (motorised actuator + RuB brass ball valve) that integrates with an Ajax security system to automatically or manually stop water flow when a leak is detected. The unit supports remote control via the Ajax app, local operation by button or mechanical lever, and integration with leak detectors and automation scenarios.

• Includes RuB/Bonomi brass ball valve (available in ½" / DN15, ¾" / DN20, or 1" / DN25 sizes) with a high‑torque electric actuator.
• Two‑way Jeweller radio communication (region‑dependent bands, e.g. 868/915 MHz) for integration with Ajax Hubs and leak detectors.
• Battery‑powered (4× CR123A preinstalled) with optional 9 V DC / 2 A external power input; long battery life (up to ~3 years depending on use).
• Fast close action (typically 5–7 s) and up to 8.5 N·m actuator torque; rated for working pressures to 10 bar.
• Anti‑tamper mounting lock and sabotage alarm; installation should be performed by a qualified plumber or authorised installer.

Use cases: residential and commercial leak protection, automated water isolation during extended absences, integration into monitored alarm systems, and contractor installations for property protection.

Compliance & safety: Product certifications vary by region — check the product label or datasheet for CE / UKCA and local approvals. For safe installation and to meet local plumbing regulations, have the valve installed by a qualified plumber and follow the official Ajax installation manual.

Note: Some specifications vary by valve size (DN15/DN20/DN25). Refer to the official datasheet for size‑specific tables.