This is a small device called a reed switch. When the device is exposed to a magnetic field, the two ferrous materials inside the switch pull together and the switch closes. When the magnetic field is removed, the reeds separate and the switch opens. This makes for a great non-contact switch. This switch can carry up to 1.2A.
- Connection type= SPST (Normally Open Connection).
- Physical Size= 20mm length, 2.5mm dia
- The reed switch is an electrical switch operated by an applied magnetic field.