... sense the imbalance is suitable for detect the smoke in house, shop, hotel, restaurant, office building, school, bank, library, ... current: ≤200uA (network type), ≤10uA (independence or wireless type) 3) Alarm current: ≤20mA 4) Indicate alarm: red LED flash 5) Sound level: ≥85dB ... , once per 1 second at alarm state 4) Select proper place (normally mounted on the center of the ceiling), fix the ...