Can I connect a wired siren to the external contact of the Ajax opening detectors

No, you can not connect a wired siren to the external contact of opening detectors:

• DoorProtect Jeweller

• DoorProtect Plus Jeweller

• Superior DoorProtect Jeweller

• Superior DoorProtect Plus Jeweller

• Superior DoorProtect Fibra

• Superior DoorProtect Plus Fibra

• Superior DoorProtect G3 Fibra

The external terminal is a digital input, not a power output.

The third-party wired siren can be connected to Relay Jeweller and Superior MultiRelay Fibra.