I had the opportunity to visit two towns in Greenland a couple of weeks ago while on vacation. The world's largest island, Greenland is a self-governing part of the Kingdom of Denmark, but does not use the same electronic sirens as mainland Denmark. The town of Qaqortoq, population around 3,000, tested their sirens at noon and I could hear two of them (I'll try to post the ambience recording later). The town of Narsaq, population about 1,500, did not test but I counted seven sirens plus an ancient factory siren. These are all ten-port sirens, but I don't recognize the manufacturer.
Qaqortoq siren and call boxes around town, labeled in Greenlandic and Danish.
Below: Sirens in Narsaq, plus an old high-pitch siren on the roof of a factory (first photos). I counted seven sirens in this little town, plus the factory siren.