Ajax WaterStop 3/4" (8EU) — wireless motorised shut‑off valve for anti‑flood protection.

• Integrates with Ajax Hub over the encrypted Jeweller radio protocol to automatically close the water supply on leak alarm, manual command or via automation scenarios (schedules, arming events, etc.).
• Fast shut‑off — typical closing time ~5 seconds.
• High‑quality RuB brass threaded valve (BSPP) with a motorised actuator (torque ≈ 8–8.5 N·m) suitable for domestic hot & cold water lines (non‑aggressive fluids).
• Power: 4× CR123A preinstalled (battery life up to ~3 years depending on settings) with optional external supply 7.5–14 V⎓ (recommended ≥1.8–2 A) — external supply makes batteries a backup.
• Built‑in protections: stuck‑prevention (automatic rotations), thermal and overload protection; manual lever and actuator button for local control; tamper/mounting locks to limit unauthorised disassembly.
• Rated for typical domestic water pressure (up to 10 bar) and media temperatures up to +120 °C (observe valve and installation limits).

Use cases: domestic and light commercial anti‑flood installations, smart home water cut‑off automation, retrofit to existing plumbing where a motorised ball valve is required. Recommended for installations with an Ajax Hub (Jeweller radio) — consider environmental factors for radio range and use repeaters where required.

Compliance & safety: Follow official Ajax installation manual and local regulations for plumbing and electrical connections. Ensure power supply and valve temperature ratings are respected. Check CE / UKCA markings on the supplied product and refer to the official datasheet for installation torque, sealing and mounting instructions.