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9v long life lithium battery operated stand alone photoelectric smoke ...
9v long life lithium battery operated stand alone photoelectric smoke  ...
9v long life lithium battery operated stand alone photoelectric smoke detector sd01 with ce rohsfcc certificated for fsk868mhz
Power supply v9 quiescent current ua20 transmitting current ma25 transmission frequency868mhz mmagnetron distance mm100 coding typelearning code

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