Ajax 6V PSU (4.2–10 V) for Hub 4G, Hub 2, Hub 2 Plus & ReX 2
Original price was: R525.00.R460.00Current price is: R460.00. Incl. VAT
The Ajax 6V PSU (type A) is an internal alternative power supply board for compatible Ajax hubs and ReX 2 allowing operation from a 4.2–10 V DC source or external battery where mains power is unavailable or unreliable.
- Compatible with Ajax Hub (4G), Hub 2 (2G), Hub 2 (4G), Hub 2 Plus and ReX 2 Jeweller
- Replaces the standard 110/230 V mains power supply board inside the compatible device
- Accepts a 4.2–10 V DC input and supplies up to 1.5 A at 4.8 V DC
- Suitable for off-grid, construction-site and other installations using an appropriate external battery or low-voltage source
- Terminal adapter is included; external battery or power source is sold separately
Important: do not connect a 12 V or higher battery to this PSU
Description
Ajax 38213.78.NC 6V PSU (type A) for low-voltage and external battery power | 4.2-10 V DC Input Voltage
The Ajax 6V PSU (type A) is an alternative internal power supply board for selected Ajax hubs and the ReX 2 range extender. It replaces the standard 110/230 V mains power supply board and allows the device to operate from a suitable 4.2–10 V DC source or external battery.
It is particularly useful where normal mains electricity is unavailable or unreliable, including construction sites, vacant properties and other off-grid security installations.
Choose the Right Option
Choose the 6V PSU (type A) when your external battery or DC source operates within 4.2–10 V DC.
If your installation uses an 8–32 V DC source, including typical 12 V or 24 V battery and vehicle systems, use the Ajax 12-24V PSU (type A) instead.
Why Choose This Product?
- Run Ajax away from mains power: connect a compatible hub or ReX 2 to an appropriate low-voltage source or external battery.
- Fits inside the existing enclosure: the board replaces the device’s standard mains PSU rather than requiring a separate external converter enclosure.
- Supports several Ajax devices: the current type A version is compatible with selected Hub, Hub 2 and ReX 2 models.
- Flexible battery operation: Ajax supports batteries operating within the 4.2–10 V DC range and recommends suitable zinc-air alkaline batteries where extended autonomous operation is required.
- Terminal connection included: the supplied terminal adapter provides an alternative way to connect the external DC source.
Before You Buy
- Compatible with Hub (4G) Jeweller, Hub 2 (2G) Jeweller, Hub 2 (4G) Jeweller, Hub 2 Plus Jeweller and ReX 2 Jeweller.
- The external battery or low-voltage power source is not included.
- Do not connect a battery or power source rated at 12 V or higher to the 6V PSU (type A). Use the Ajax 12-24V PSU (type A) for suitable higher-voltage installations.
- The 6V PSU replaces the standard mains PSU; it is not an additional dual-input power supply. The device operates with either its standard PSU or the alternative PSU.
- The 6V PSU (type A) is not compatible with Superior Hub Hybrid (2G) or Superior Hub Hybrid (4G).
- Ajax specifies installation by a qualified electrician. Disconnect the device from mains power before replacing the internal PSU board.
Technical Specifications
| Product | Ajax 6V PSU (type A) |
|---|---|
| Manufacturer code | 38213.78.NC |
| Product type | Alternative internal power supply unit |
| Compatible hubs | Hub (4G) Jeweller; Hub 2 (2G) Jeweller; Hub 2 (4G) Jeweller; Hub 2 Plus Jeweller |
| Compatible range extender | ReX 2 Jeweller |
| Input voltage | 4.2–10 V DC |
| Input current | Up to 1 A |
| Switch-on voltage | 4.2 V DC ±2.5% |
| Switch-off voltage | 3–3.4 V DC, depending on load |
| Output voltage | 4.8 V DC ±5% |
| Output current | Up to 1.5 A |
| Power socket | 6.5 × 2 mm |
| Power plug | 5.5 × 2.1 mm |
| Installation | Inside the compatible hub or range extender enclosure, replacing the standard power supply board |
| Operating temperature | −10 °C to +40 °C |
| Operating humidity | Up to 75% |
| Dimensions | 98 × 70 × 17 mm |
| Weight | 26 g |
What’s in the Box
- 1 × Ajax 6V PSU (type A)
- 1 × Terminal adapter
- 1 × Quick start guide
Additional information
| Weight | 26 g |
|---|---|
| Dimensions | 98 × 70 × 17 mm |
Compatible Devices
The Ajax 6V PSU (type A) is compatible with the following Ajax hubs and range extender:
- Ajax Hub (4G)
- Ajax Hub 2 (2G) EOL
- Ajax Hub 2 (4G)
- Ajax Hub 2 Plus
- Ajax ReX 2 Range Extender
Important: The 6V PSU (type A) is not compatible with Ajax Superior Hub Hybrid models.





















