MICRO SWITCH V7 Series Miniature Basic Switch, Single Pole Normally Open Circuitry, 21 A at 277 Vac, Pin Plunger Actuator, 1,57 N [5.5 oz] Maximum Operating Force, Silver Alloy Contacts, Quick Connect Termination MICRO SWITCH V7 Series premium basic switches are used for simple or precision on/off, end of limit, presence/absence, pressure, temperature and manual operator interface application needs.