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บริษัท ทีโอที ... - CLC · Photoelectric type The door is left open while the light beam is blocked between a transmitter and a receiver installed on both

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Page 1: บริษัท ทีโอที ... - CLC · Photoelectric type The door is left open while the light beam is blocked between a transmitter and a receiver installed on both
Page 2: บริษัท ทีโอที ... - CLC · Photoelectric type The door is left open while the light beam is blocked between a transmitter and a receiver installed on both

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Page 3: บริษัท ทีโอที ... - CLC · Photoelectric type The door is left open while the light beam is blocked between a transmitter and a receiver installed on both

บริษัท ทีโอที จำกัด (มหาชน)