NZ registered beacon with its own internal GPS, ie Country coded for NZ and properly registered in NZ I would expect 30mins to 50 minutes or less from activation to action happening. By the time they ring the emergency contacts to check its a valid activation and sort a chopper closest.
If brought overseas and properly registered with the authorities in the counrty of purchase I reckon a couple of hours by the time they check the activation is valid, its location and pass it on to NZ SAR
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