Tech specs



Remotely controlled water shutoff valve


Jeweller communication technology

Proprietary wireless technology for transmission of events.
  • Two-way communication.
  • Protection against device spoofing.
  • Block encryption featuring a floating key.
  • Instant notifications.
  • Remote configuration via the Ajax apps.

Radio frequency bands

866.0 – 866.5 MHz
868.0 – 868.6 MHz
868.7 – 869.2 MHz
905.0 – 926.5 MHz
915.85 – 926.5 MHz
921.0 – 922.0 MHz
Depends on the region of sale.

Maximum effective radiated power (ERP)

up to 20 mW
Automatic power control to reduce power consumption and radio interference.

Radio signal modulation


Radio communication range

up to 3,600 ft
Between the device and the hub (or radio signal range extender) without obstacles.

Radio signal encryption

All the data stored and transmitted are protected by block encryption with a floating key.

Frequency hopping

To prevent radio interference and jamming.

Operating components

shutoff valve

½, ¾, or 1" Bonomi shutoff valve provided.

electric actuator

Controls water supply.


Installs between the shutoff valve and the electric actuator.

mounting lockers

Fix the electric actuator on the shutoff valve. There are two options: standard (pre-installed) and alternative (for installation in public access sites).

Water shut-off

shutoff valve

Fields of application

water supply
heating systems

Operating fluid

hot and cold water
non-aggressive liquids

Shutoff valve material


Connection type and thread of shutoff valve

Thread size:
  • 1/2“ (15 mm)
  • 3/4“ (20 mm)
  • 1“ (25 mm)

The temperature range of liquids the shutoff valve is suitable for

from 41°F to 248°F

Flange for connecting the electric actuator

Made according to the ISO 5211 standard.

Lever on mount

For manual water supply shut-off in emergencies. Water supply control requires no tools.

Water shut-off

electric actuator


up to 8.5 N•m

Operating pressure

the device is designed for domestic pipelines with operating pressure up to 145 psi

Speed of water shut-off

up to 5 seconds
The value may increase due to contamination of the shutoff valve.

Remote control

device is configured and controlled via Ajax apps
Ajax apps also display the current state of the device: open/closed, battery charge status, external power supply, and communication with the hub.

Manual control

button on the electric actuator enclosure
When pressed, the shutoff valve opens/closes.

Additional features


  • quick dismantling and installation of the electric actuator on the flange without tools
  • 4 installation positions of electric actuator on the flange
  • mounting lockers to complicate unauthorized disassembly of the electric actuator
The design allows installation, maintenance, and repair of the device in hard-to-reach places: mine, technical box, wall, etc. It is possible to replace the actuator unit without dismantling the shutoff valve. The electric actuator is removed from the valve without tools.

LED indication

The colour of the LED illumination of the Ajax logo indicates the electric actuator status.


  • reactions to alarms
  • security mode change reactions
  • scheduled actions
  • by pressing Button
  • by temperature
  • by pressing LightSwitch

Out of range temperature notification

The corresponding notifications are sent to Ajax apps when the device temperature tops 140°F and when it returns to normal.


The device is intended for indoor use. Contact a plumber to install the shutoff valve.

Anti-sabotage protection

Protection against spoofing

device authentication

Detection of communication failure

from 36 s
The time to detect the communication loss depends on the Jeweller (or Jeweller/Fibra) settings.

Tampering alarm

Notifies about attempts to detach the enclosure from the mount.

Mounting lockers for fastening

The kit includes two options:
  • Standard (pre-installed) locker — for quick fixing of the electric actuator on the shutoff valve. Easily removable for quick valve access.
  • Alternative locker — installed instead of the WaterStop’s standard locker. The alternative locker securely fixes the electric actuator on the valve and makes it harder to remove the electric actuator if someone tries it unauthorized.

Power supply

Battery powered

4 × CR123A battery
Up to 3 years of battery life.

Optional external power supply

9-12 V⎓, 2 A
The batteries become a backup power source when external power is connected.



4.09″ × 5.51″ × 2.76″
Full size (shutoff valve Bonomi ½" + electric actuator).
4.09″ × 5.91″ × 2.76″
Full size (shutoff valve Bonomi ¾" + electric actuator).
4.11″ × 6.26″ × 2.76″
Full size (shutoff valve Bonomi 1" + electric actuator).
3.66″ × 2.76″ × 3.74″
Dimensions of the electric actuator.
2.95″ × 1.06″
Dimensions of the ½" Bonomi shutoff valve.
3.15″ × 1.26″
Dimensions of the ¾" Bonomi shutoff valve.
3.54″ × 1.61″
Dimensions of the 1" Bonomi shutoff valve.


30.65 oz
Total weight (shutoff valve Bonomi ½" + electric actuator).
35.7 oz
Total weight (shutoff valve Bonomi ¾" + electric actuator).
47.13 oz
Total weight (shutoff valve Bonomi 1" + electric actuator).
18.9 oz
Electric actuator weight.
11.75 oz
The weight of the ½" Bonomi shutoff valve.
16.79 oz
The weight of the ¾" Bonomi shutoff valve.
28.22 oz
The weight of the 1" Bonomi shutoff valve.

Operating temperature range

from 32°F to 140°F

Operating humidity

up to 95%



Complete set

WaterStop Jeweller
4 CR123A batteries
Quick Start Guide

Additional information

Compliance with standards


24 months

User manual