$3.16
7 na zalihi
Ovakve senzore već ste vidjeli, ako nigdje – onda u starim filmovima kako se koriste za zaštitu od provale, tj. za alarmni sustav. Zapravo se radi o magnetu i reed senzoru od kojih se svaki nalazi u jednom od ova dva dijela. Postavljaju se najčešće na vrata i prozore jedan pored drugoga. Kada su blizu jedan drugoga(točnije 13mm ili manje), reed switch se zatvara. Spojite ga na Croduino / Arduino kao običan prekidač i imate detekciju otvorenih vrata, prozora, ladica, kuhinjskih ormarića…
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