Ajax 12v PSU for Hub

R275.00 incl. VAT

The Ajax 12v PSU is a power supply unit used to connect the Hub, Hub Plus and ReX units to low-voltage power sources such as a 12V power supply or portable battery. An ideal solution for premises with no electricity, unstable power, mobile homes or boats.

The 12v PSU replaces the on-board 220v PSU

1 in stock

SKU: PS420 Categories: , Tags: , ,


Ajax 12v PSU for Hub, Hub Plus & Rex

A power supply unit used for connecting the Hub, Hub Plus control panels and ReX radio signal range extender to low-volgate power sources.

At Warehouses:

Use Ajax in premises lacking electricity or having an unstable power supply. A 12 V power supply unit allows connecting hubs and radio signal extenders to low-voltage networks or use a portable battery.

In Campervans and Caravans:

Ajax protects your home, even if it goes on wheels. Connect the hub to a car or portable battery, and let the security system travel with you.

On Yachts:

Insert a SIM card and connect the hub to the on-board network or battery so that Ajax always guards your boat at the pier.


The power supply unit is compatible with Hub, Hub Plus, and ReX. It features a standard socket for connecting the power jack plug and has a bundled terminal adapter.


12V PSU is installed into the device body, replacing the pre-installed 110/230 V power supply unit.

Calculate Power Consumption

How to calculate the time of operation of the central panel from an external battery:

Divide the capacity of the external battery by the power consumption of the central panel.

Power consumption of the central panel depends mostly on active communication modules — the average values ​​are indicated in the table:

Central panel Active communication modules Average input current
Hub GSM 42 mA
Ethernet 80 mA
GSM+Ethernet 90 mA
Hub Plus GSM 35 mA
Ethernet 72 mA
GSM+Ethernet 93 mA
Wi-Fi 20 mA
Wi-Fi+GSM 42 mA
Wi-Fi+Ethernet 80 mA
Wi-Fi+GSM+Ethernet 96 mA
Hub 2 GSM 33 mA
Ethernet 80 mA
GSM+Ethernet 86 mA
ReX 20 mA


For instance, when connected to a 40A·h battery, Hub 2 — with active GSM module only — will operate approximately 1200 hours (40A·h / 0.033A).

Technical Specifications

Compatibility Hub, Hub Plus, ReX
Input voltage 8-20 V DC
Output voltage 4.65 V ± 3%
Switch-on voltage 8 V ± 2.5%
Switch-off voltage 6.9-7.5 V (depending on load)
Input current <1 A
Output current 1,5 A
Connection Socket: 6,5 х 2 mm
Plug: 5,5 х 2,1 mm (power jack)
Dimensions 138 х 64 х 13 mm
Weight 30 g
Complete set 1. 12V PSU for Hub/Hub Plus/ReX
2. Terminal adapter
3. Quick guide

User Manual

Ajax 12v PSU for Hub, Hub Plus and Rex User Manual

Ajax Alarm User Guide


There are no reviews yet.

Only logged in customers who have purchased this product may leave a review.