Interruttore canna vetro magnetico normalmente aperto NO bassa tensione 2 x 14 mm confezione da 20

This glass reed switch is normally open type, the size is 14 2mm. 20 Reed Switches. Maximum switching current: 0.5A. - Note, be careful when bending or cutting the s and avoid for putting any undue pressure on them as this will break the glass/seal.

eBay