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• + [QUESTION] Can Heiman 4G smoke alarm and CO alarm used directly in Macao?
• + [QUESTION] What kind of host do i need to choose to connect heiman smoke alarm 602PC-4 and what should i pay attention with the relay?
• + [QUESTION] Can you help confirm the following information about the smoke alarm WS2SA-1-TY what's the storage temperature？standard for impact resistance?UV resistant.?