Skip to content
Elausys

KNX Gateways for Alarm Systems / AJAX-KNX User Manual

Technical data

Electrical ratings, mounting, connections, operating limits and supported system capacity.

elausys · 19 September 2026
Technical DataValue
Auxiliary power supply terminalScrew terminal 12–30 VDC / GND
Power consumption KNX bus (typ.)< 16 mA @ 29 VDC
Operating temperature+5 °C to +45 °C
Enclosure dimensions2 SU
MountingDIN rail
KNX terminalPluggable micro terminal, Red/Black, 4-pole PUSH WIRE for solid conductor wire 0.6–0.8 mm²
KNX bus voltage29 VDC
EthernetRJ45 connector
Communication protocol (events)SIA over local Ethernet
Communication protocol (commands)Encrypted AJAX cloud protocol (internet required)
Maximum zones96 per gateway
Maximum areas4 per gateway
Galvanic isolationYes (KNX bus)

Frequently Asked Questions

What are the supply and operating temperature limits?

The auxiliary supply is 12-30 VDC. The operating temperature range is +5 °C to +45 °C.

How is the gateway mounted?

The gateway mounts on a DIN rail and occupies two space units.

Keep exploring

Find the other guides for this product in the documentation.

Back to AJAX-KNX User Manual