Reed swich SPST N.O. (normally open) operated by magnet requiring no physical/mechanical contact with switch conductors. Ideal for proximity detectors, revolution counters, automation, etc.  

• Device Type: SPST normally open magnetic reed switch.
• Package: Sealed glass envelope
• Dimensions: 28mm long with 8mm leads
• Contact Rating: Not known - for low voltage and current applications (i.e. digital logic, etc.)
• Manufacturer: Not known
• Specification: N/A
• Source: Inventory Surplus