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Normally open reed switch that closes when a magnet comes near, for door sensors, limit detection and counting
Normally open | 2x14mm glass tube | sealed with inert gas | no sliding contacts
Trim and solder carefully to avoid cracking the glass; hand soldering at 280-300C
滿千免運優惠(限郵寄和超商純取貨) on order
本賣場無實體店面,無提供自取服務,敬請見諒。 on order
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磁簧開關(Reed Switch)是一種被動式的電子開關元件,具備體積小、結構簡單、反應靈敏等優點,安裝與控制皆相當方便。外觀通常為一根密封的玻璃管,內部裝有兩片鐵質彈性舌簧,並填充惰性氣體(如氮氣或氬氣)以防止接點氧化。而所謂「常開型(Normally Open, NO)」磁簧開關,是指磁鐵靠近時電路導通,平時則為斷開狀態。也就是說,沒有磁力時開關處於開路;當磁鐵靠近時,金屬片吸合,電路接通;磁鐵移開後,電路再次中斷。
磁簧開關廣泛用於磁場感測、限位控制、計數感應、門禁偵測等場合,例如門磁、窗磁、各式防盜系統,也常見於通訊設備、家電控制與工業應用。由於開關狀態可透過永久磁鐵控制,因此也被稱為「磁控開關」。
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