Konnected - Which Siren/Strobe?

Have been looking at purchasing a 6-Zone Konnected Alarm Panel with Siren Output but I am unsure which external Siren/Strobe would be best for the board?

I’ve attempted to post a question on the Konnected forum, but without success. Seems the forum might be broken?

I’ve looked at a number of siren/strobe combinations on eBay and AliExpress, but am unsure which would be best for the Konnected board. So I am interested in any advice on which outdoor Siren/Strobe you’ve used?

Much appreciated.