Ajax 12V–24V PSU | Low-Voltage Power Supply for Hub 2 & ReX 2 | Vehicle & Low-Voltage Networks

FAQs

What is the 12-24V PSU (type A) and what does it do?

The 12-24V PSU (type A) is an alternative power supply unit that allows Ajax hubs and range extenders to operate from low-voltage DC power sources (8-32V) instead of standard 110/230V AC mains power. It’s an electronic board that replaces the built-in power supply, enabling Ajax security systems to be powered by vehicle electrical systems, portable batteries, or any compatible DC power source.

Which Ajax devices are compatible with the 12-24V PSU (type A)?

The 12-24V PSU (type A) is compatible with Hub (2G) Jeweller, Hub (4G) Jeweller, Hub Plus Jeweller, and ReX Jeweller range extender. Note that there are separate alternative power supply units available for Hub 2, Hub 2 Plus, and ReX 2 models.

Can I install the 12-24V PSU myself?

No, only qualified specialists or professional electricians should install the 12-24V PSU (type A). Installation involves opening the hub or range extender enclosure, disconnecting the original power supply board, and replacing it with the alternative unit. The process requires following electrical safety rules and takes approximately 10 minutes for a professional. A detailed installation manual is provided.

What voltage range can the 12-24V PSU accept?

The 12-24V PSU (type A) accepts input voltages from 8-32V DC. The unit switches on at 8V DC (± 2.5%) and switches off between 7-7.5V DC depending on the load. This wide voltage range makes it compatible with various 12V and 24V power sources commonly found in vehicles, boats, and portable battery systems.

Can I use the 12-24V PSU with a car battery?

Yes, the 12-24V PSU is designed to work with 12V car batteries and 24V truck electrical systems. This makes it ideal for mobile security applications in vehicles, trailers, RVs, boats, and yachts. The wide 8-32V input range accommodates voltage fluctuations typical in vehicle electrical systems.

What’s included in the 12-24V PSU package?

The complete set includes the 12-24V PSU (type A) board, a terminal adapter for connecting wires directly to the power supply, and a quick start guide. The unit features a standard 6.5 × 2 mm power jack socket and a 5.5 × 2.1 mm plug for flexible connection options.

Will installing the 12-24V PSU affect my hub’s functionality?

No, installing the 12-24V PSU does not affect the functionality of your Ajax hub or range extender. The unit simply provides an alternative power source while maintaining all standard features and capabilities of the device. The hub will continue to operate normally with all connected devices and communication channels.

What happens if the voltage drops below 8V?

The 12-24V PSU has built-in protection and will switch off when the voltage drops to between 7-7.5V DC (depending on load) to prevent damage to the device. When the voltage returns to 8V DC or above, the unit will switch back on. This protects both the power supply and the connected hub or range extender from low-voltage conditions.

Can I use the 12-24V PSU outdoors or in extreme temperatures?

The 12-24V PSU is designed to operate in temperatures from -10°C to +40°C and humidity up to 75%. Since it’s installed inside the hub or range extender enclosure, it shares the same environmental limitations as the host device. For outdoor applications, ensure the hub itself is in a protected, weatherproof location appropriate for its IP rating.

What’s the difference between the 12-24V PSU (type A) and alternative PSUs for other Ajax devices?

The 12-24V PSU (type A) is specifically designed for Hub (2G) Jeweller, Hub (4G) Jeweller, Hub Plus Jeweller, and ReX Jeweller. Different alternative power supply units are available for newer models like Hub 2, Hub 2 Plus, and ReX 2, as these devices have different power requirements and internal configurations. Always use the correct PSU model for your specific Ajax device.