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Review confirmed by purchase 
I give it the maximum rating, but: a manual in Polish would be useful. On the militaria.pl description, I suggest changing the information about how to activate the device – there is no button on the back of the housing; to trigger the alarm, you have to pull the pin, which unfortunately means you could drop or lose the sounding alarm. In my opinion, it will be most useful indoors (underground parking, dark corridor, underground passage, scaring off dogs, etc.). Apart from that, everything is OK, it sounds and flashes as described.
