
Ajax WaterStop Jeweller
Wireless shutoff valve with an electric actuator for remote water supply control
Ajax WaterStop Jeweller won the Red Dot Design Award

Product versions

Ajax WaterStop 3/4” (DN 20) Jeweller

Ajax WaterStop 1/2” (DN 15) Jeweller

Ajax WaterStop 1” (DN 25) Jeweller
Not a drop of problems
Ajax WaterStop Jeweller is a smart valve designed to protect facilities from flooding. The valve automatically shuts off the water supply within 7 seconds of a leak being detected, whether by LeaksProtect Jeweller or a third-party detector. Routine water control also becomes easier: the valve can follow automation scenarios to shut off water on schedule, upon alarms, or when the system is armed or disarmed. Configuration, real-time notifications, device state, and remote water control are available in Ajax apps anytime, from anywhere in the world.
Key features
In an Ajax system, you can combine devices of all product categories: Intrusion protection, Video surveillance, Fire and life safety, or Comfort and automation. Create the system to suit your needs and manage it in a single interface.
Wherever leaks can occur
Discover future-proof hardware
Water shutoff in 7 seconds
Ajax WaterStop Jeweller is equipped with a powerful actuator delivering up to 8.5 N•m of torque. This is enough to shut off even a stuck valve without risking damage. Under normal operating conditions, Ajax WaterStop Jeweller shuts off the water supply within 7 seconds of receiving a command or after LeaksProtect Jeweller or a third-party sensor detects a leak. In a system with a ¾-inch pipe and 2.5 bar water pressure, less than 33 oz of water is released before shutoff. Thanks to battery-powered operation, facilities and users' peace of mind remain protected 24/7, even during a power outage.
Shuts off even stuck valves
Works autonomously at sites with unstable or no power supply

Protected on every level
Ajax WaterStop Jeweller is designed to ensure reliable flood protection even in challenging conditions. If a valve is stuck, the device will still attempt to shut off the water supply. Should this result in overcurrent or overheating, Ajax WaterStop Jeweller will immediately send notifications via Ajax apps.
Overheating notifications
Overcurrent protection

One-stop solid brassware
Ajax WaterStop Jeweller is available with three valve options: ½” (DN 15), ¾” (DN 20), or 1” (DN 25). These are the most common sizes for residential and commercial facilities. The device's electric actuator is also compatible with any ball valve that meets the ISO 5211 standard. So when it comes to sites with specific requirements, it's easy to integrate Ajax WaterStop Jeweller into existing water supply systems.

Check if Ajax WaterStop Jeweller is compatible with a third-party shutoff valve
Easy deployment without mess and hassle
Ajax transforms the traditionally expensive, time-consuming, and dusty installation of anti-flood systems into a simple and smooth experience. Thanks to cutting-edge hardware and software, advanced capabilities are built into a compact design. Miniature Ajax water leak detectors fit easily into hard-to-reach places and require no disassembly — they can simply be placed on a horizontal surface without mounting. The wireless shutoff valve is installed directly into the existing plumbing line. Four mounting positions allow the valve to adapt to different pipe layouts.


Stable performance for years
No cable routing is required: Ajax WaterStop Jeweller is fully autonomous and does not rely on the 110/220 V~ power grid. Installation takes less time and effort, and the device is ready to operate for years on a single pre-installed battery set. When the battery level becomes low, Ajax apps notify users and companies in advance. The batteries are replaceable, so after up to three years of operation, an installer can simply swap them, and the device will continue to operate as usual.
- Up to 3 years of operation on pre-installed batteries
- Early low battery warnings in Ajax apps
- Replaceable CR123A batteries

When a valve is expected to operate continuously or is installed in places with extreme temperatures, the batteries may discharge faster. In such cases, the device can be connected to a 9–12 V⎓ power supply. This eliminates frequent battery replacements and reduces service costs. The pre-installed batteries remain in place as a backup source, so a power outage won't be an issue.
- 9–12 V⎓ power supply connection
- Pre-installed batteries as a backup power source
9–12 V⎓ power supply unit is not included in the complete set.


Unique wireless technologies
In Ajax systems, communication between wireless devices is powered by proprietary technologies unmatched in the industry. Jeweller ensures reliable alarm and event transmission backed by encryption, frequency hopping, and outstanding energy efficiency.
Up to 3,600 ft of secure two-way radio communication in open space
Encrypted two-way radio communication
Instant alarm and malfunction notifications
Communication through steel and concrete
Some facilities have thick walls, metal partitions, or sheer distances that affect signal quality. Ajax range extenders are designed to increase the range of a wireless network and deliver a stable connection to a hub despite the obstacles. And by choosing the model with an Ethernet cable connector, you get an additional communication channel. А single system can accommodate up to five range extenders.
Up to 5 range extenders within one system
Ethernet-equipped model available




Always in control with Ajax apps
Keep all important information close at hand in real time, from anywhere with an internet connection — on a smartphone or desktop. Ajax apps allow users to check the device state and control the water supply remotely with just a few taps.

Receive instant updates about system events via Ajax apps. Notifications include precise details about each incident, such as the time, location, and triggered device. The system controls each device's state and reports malfunctions or low battery levels in advance.

Add the device to the system, enable LED indication, and configure automation scenarios remotely in Ajax apps. Setup and maintenance take just seconds, with no need for on-site visits.

Access up to 500 recent system events in a clear, easy-to-navigate log. Each entry includes the device, time, and event description, helping reconstruct incidents and provide detailed information for insurance purposes.

Complete facility monitoring
With Ajax PRO Desktop, building administrators can monitor not only security but also Ajax automation and comfort devices. Device states, event logs, and microclimate data — the app offers a complete overview in a single intuitive interface. Installers can remotely adjust settings and provide additional services tailored to the specific needs of each site.

Advanced automation for greater safety
Ajax WaterStop Jeweller is part of the Ajax ecosystem and can interact with other devices through automation scenarios. With these scenarios, the valve can shut off water before a leak causes damage. To proactively reduce risks, the water supply can also be set to turn off automatically when not in use — a reliable combination of security and automation that runs like clockwork.
Learn more about automation scenarios
Flood prevention
Ajax WaterStop Jeweller automatically shuts off the water supply within 7 seconds after a leak is detected. It works with both LeaksProtect Jeweller and third-party detectors connected via an Ajax integration module.
Water leak
LeaksProtect Jeweller
Ajax WaterStop Jeweller

Water supply synchronized with security modes
The water supply can be automatically shut off when the system is armed and restored once it is disarmed. This ensures protection while the facility is unoccupied and automates an otherwise tedious, repetitive task.
Arming
Ajax WaterStop Jeweller

Scheduled water supply
Ajax WaterStop Jeweller can follow a defined schedule, turning the water supply on and off at set times. Align it with working hours or daily routines to use water only when needed, thus reducing the risk of leaks when no one is around.
Schedule
Ajax WaterStop Jeweller

Sabotage resistance

Communication failure detection

Anti-sabotage locker

Tamper alarm

Control button locking
Hassle-free installation and setup
Ajax WaterStop Jeweller is ready to operate right out of the box, with no wiring or enclosure disassembly required. With four mounting positions, the device can be easily installed on the bundled valve or any compatible valve, regardless of pipe layout. Device connection, configuration, and monitoring are managed via intuitive Ajax apps — on mobile or desktop. This comes in handy when the valve is installed in hard-to-reach locations such as pipe tunnels, technical boxes, or walls.
Install the electric actuator on a shutoff valve without enclosure disassembly.

Connect the device to the hub by scanning the QR code via Ajax apps.

Check the real-time device state, configure automation scenarios, view the event log, and receive notifications in mobile or desktop Ajax apps.

In open space.
9–12 V⎓ power supply unit is not included in the complete set.
If the system is set to operate at a 12-second polling interval and report a connection loss after three undelivered data packets.
Ţēćĥńĩćàĺ ĩńƒōŕḿàţĩōń
Ajax WaterStop ½" (DN 15) Jeweller
Ajax WaterStop ¾" (DN 20) Jeweller
Ajax WaterStop 1" (DN 25) Jeweller
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Ĩń àń ÀĴàx śŷśţēḿ, ŷōũ ćàń ćōḿƀĩńē ďēvĩćēś ōƒ àĺĺ ƥŕōďũćţ ćàţēĝōŕĩēś: Ĩńţŕũśĩōń ƥŕōţēćţĩōń, Vĩďēō śũŕvēĩĺĺàńćē, Ƒĩŕē àńď ĺĩƒē śàƒēţŷ, ōŕ Ćōḿƒōŕţ àńď àũţōḿàţĩōń. Ćŕēàţē ţĥē śŷśţēḿ ţō śũĩţ ŷōũŕ ńēēďś àńď ḿàńàĝē ĩţ ĩń à śĩńĝĺē ĩńţēŕƒàćē.
Ajax WaterStop — remote-controlled water stop valve
The Ajax WaterStop tap allows you to remotely shut off the water supply in the room under the control of the Ajax security system. The device combines a high-quality Bonomi Industries valve and an electric actuator with a control unit. The faucet to control the water supply is connected to the control panel via the secure wireless Jeweller protocol. Ajax WaterStop can be controlled remotely from anywhere worldwide simply by accessing the Internet. Ajax's applications for PCs and mobile phones allow you to check the status and change the position of the valve at any time.The water stop valve from Ajax WaterStop will automatically turn off the water in 7 seconds on the alarm of the LeaksProtect water leakage sensor or another water leakage sensor. At the time of an alarm, all users connected to the system and the security company will receive a notification about the alarm and the scenario activation. In addition to the scenario of leakage, it is possible to set the shutdown of water at a particular time or when the security system becomes armed.
Features of Ajax WaterStop remote controlled water shut off faucet
The water stop valve is available in black and white. The device is compatible with pipes for supplying cold and hot water. To shut off the water, an electric drive is used, which is protected from overheating and can operate at temperatures up to 60 °C at the installation site. The built-in tamper alarm reports an attempt to tear the case off the mounting platform.The Ajax WaterStop faucet works with the Jeweller wireless communication protocol, which allows communication with the security system control panel at 1100 m without obstacles. Management and configuration take place remotely using Ajax applications. Jeweller radio technology provides two-way communication between the alarm central and the water shutoff valve and protects the device from forgery with block encryption with a floating key. Also, notifications to the application are sent instantly. The applications for PCs and smartphones also display the current status of the tap to shut off the water: open/closed, the status of the battery charge, external power supply, and communication with the control panel.The radio signal strength is automatically adjusted to reduce power consumption and interference. RF hopping is used to prevent radio interference and jamming. Loss of communication is detected within 36 seconds, this time depending on the settings of the communication technology. The valve has an input for an external power supply of 9 V⎓. The Bonomi Industries valve is included. And it works with a temperature range from -20°C to +170°C.With the help of the valve, the water is blocked in 7 seconds. This value may increase due to contamination of the shutoff valve. There is a lever on the platform to manually shut off the water supply in emergencies. Water supply control does not require tools. There is a button on the body of the electric drive for manual control. When pressed, the shutoff valve opens/closes. LED indication using the color of the LED backlight of the Ajax logo indicates the state of the drive.
The Ajax WaterStop faucet supports automation scenarios such as:
- Responds to water leakage sensor alarms.
- To change the security mode.
- Performs scheduled activities.
- It fires when a Button is pressed.
- Works on temperature.
- Activated by pressing LightSwitch.
Compatibility of the tap for shutting off water from Ajax
The faucet for remote shutoff of water is compatible with the following control panels and signal repeaters:
- Hub Plus
- Hub 2 (2G)
- Hub 2 (4G)
- Hub 2 Plus
- Superior Hub Hybrid (2G)
- Superior Hub Hybrid (4G)
- Rex
- Rex 2
Installing a water stop device from Ajax
The design of the Ajax WaterStop water shutoff valve allows you to mount, maintain, and repair devices in hard-to-reach places: a mine, a technical box, a wall, etc. You can replace the drive unit without dismantling the shutoff valve. The actuator can be removed from the valve without tools.The Ajax WaterStop valve is designed for indoor use. To install the shutoff valve, you need to contact a plumber.
Faucet kit for remote shutoff of water
Together with the Ajax WaterStop Jeweller, the kit will include four pre-installed CR123A batteries that last up to 3 years (when an external power supply is connected, the batteries become a backup power source) and a brief instruction.





















