Min. Order Reference FOB Price
1 Piece US$1.00-2.00 / Piece
Product Description
Product Description This sensor is essentially a reed switch, encased in an ABS plastic shell. Normally the reed is 'open' (no connection between the two wires). The other half is a magnet. They're often used to detect when a door or drawer is open, which is why they have mounting tabs and screws. ...