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Product Code: 101021
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30 грн
KY-021 The reed switch module has a small normally-open reed switch (sealed contact), which closes when a magnet is brought near, and a low voltage level appears at the module output. The board has a 10 kOhm resistor between the
"+5 V" contact and the
"S" contact. The device can be used as a security alarm sensor when a door or window is opened.
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KY-021 Reed Switch Module
30 грн
