Smart | Electric Water Valve Controller | DN20 | 52269.155.WH1 Ajax

Technical Specifications
Communication technology: Jeweller, two-way communication, AES encryption, tamper protection
Radio frequency range: 866–926.5 MHz (depending on region)
Operating range: up to 1,100 m (no obstacles)
Valve: RuB brass shut-off valve ¾" (DN20), NPT threads
Working medium: cold and hot water, non-aggressive liquids
Working temperature (liquid): –20 °C to +177 °C
Working temperature (device): 0 °C to +60 °C
Working pressure: up to 10 bar (145 psi)
Closing speed: up to 7 s
Torque: up to 8.5 N·m
Power supply: 4× CR123A batteries (up to 3 years of operation) or external power supply 7.5–14 V DC (1.8 A)
Backup function: batteries act as a power source if external supply is lost
Dimensions: 104 × 150 × 70 mm (with actuator)
Weight: ~1 kg
Additional functions: manual lever closing, LED indication, tamper sensor, scenario control via Ajax applications

Functions

Automatic or remote water shut-off via Ajax app.

Integration with other Ajax devices – water leak, smoke, or temperature sensors.

Instant phone notifications about status changes or alarms.

Warning if someone tries to remove or tamper with the device.

Scenario control: e.g., in case of water leakage – valve closes automatically.

Manual control via lever or button.

Usage

Household: protection against flooding, remote shut-off from phone when away.

Engineers: integration into smart building systems, supports scenario logic (temperature, humidity, alarm modes).

Electricians: fast installation without special tools, easy connection to Ajax ecosystem.

Commercial premises: offices, hotels, restaurants – flood protection, automated system management.

Pros

Reliable flood and accident protection.

Quick installation and intuitive operation.

Integration with Ajax security ecosystem.

Works with batteries or external power.

Manual control in emergencies.

Real-time notifications and scenario support.

Cons

Requires Ajax HUB or compatible expansion module.

Cannot be used with aggressive liquids (only water and non-aggressive liquids).