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12-24V Power Supply Unit for Ajax Hub 2, Hub 2 Plus, and ReX 2
Quick guide for the Ajax 12-24V PSU. Learn about installation requirements, technical specifications, and compatible devices for powering your Ajax Hub 2 or ReX 2 from low-voltage sources.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
The 12-24V PSU is an alternative power supply unit designed to connect Ajax control panels and range extenders to low-voltage sources. It replaces the standard 110/230 V AC power supply unit. Installation should be performed by a professional electrician and takes approximately 10 minutes.
Product Overview
This unit allows the Ajax security system to operate in environments without stable electricity, such as warehouses, yachts, or vehicles, by connecting to low-voltage networks or portable batteries.
Installation
The installation process requires a PH1 screwdriver. The unit is installed inside the body of the hub or range extender. It features a standard socket for connecting the power jack plug and includes a terminal adapter.
Use Cases
- Warehouse: Provides power in premises lacking electricity or having unstable power supply.
- Yacht: Connects the hub to the on-board network or battery.
- Trailer or Truck: Allows the security system to travel with the vehicle to protect cargo.
Technical Specifications
Compatibility
- Hub 2
- Hub 2 Plus
- ReX 2
Electrical Parameters
- Input Voltage: 8–32 V DC
- Input Current: Up to 1 A
- Switch-on Voltage: 8 V DC ± 2.5%
- Switch-off Voltage: 7–7.5 V DC (depending on load)
- Output Voltage: 4.65 V DC ± 5%
- Output Current: Up to 1.5 A
Environment and Physical
- Operating Temperature: -10°C to +40°C
- Operating Humidity: Up to 75%
- Dimensions: 98 x 70 x 17 mm
- Weight: 26 g
Complete Set
- 12-24V PSU for Hub 2 / Hub 2 Plus / ReX 2
- Terminal adapter
- Quick start guide
Practical help
Common problems
Device fails to power on
Verify that the input voltage is within the 8-32 V DC range and check the polarity of the connection.
Installation difficulty
Ensure you have a PH1 screwdriver and that the installation is performed by a professional electrician.
Before use
- Verify compatibility with Hub 2, Hub 2 Plus, or ReX 2.
- Ensure the power source provides 8-32 V DC.
- Prepare a PH1 screwdriver for installation.
- Ensure installation is performed by a professional electrician.
Specs in practice
- Input Voltage (8-32 V DC)
- The range of low-voltage power sources the unit can accept.
- Output Voltage (4.65 V DC)
- The regulated voltage supplied to the hub or range extender.
- Operating Temperature (-10°C to +40°C)
- The ambient temperature range in which the device is designed to operate safely.
Images and diagrams
- The PSU board is designed to fit inside the hub or range extender housing.
- The connection uses a standard socket (6.5 x 2 mm) and plug (5.5 x 2.1 mm).
Model compatibility
- Compatible only with Hub 2, Hub 2 Plus, and ReX 2.
- Not compatible with original Hub, Hub Plus, or older ReX models (these require a different PSU).
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.