5Set MC-31B Interruttore a canna magnetica montaggio superficiale cablato normalmente aperto nero

Magnetic Reed Switch can not connect directly to power, It needs to work with the alarm system. It provides a switching signal. Color:Black.Material: fireproof ABS material.Product size: 55X12.5X11.5mm / 2.17" x 0.45" x 0.45"(L W H).

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