1HM19 HM Series Hermetically Sealed Basic Switch, Single Pole Double Throw, Integral Lever Actuator, 4 A at 28 Vdc, Solder Termination, Military Part Number MS27216-1
2HM19-5 HM Series Hermetically Sealed Basic Switch, Single Pole Double Throw Circuitry, 4 A at 28 Vdc, Integral Lever Actuator, Leadwire Termination, Military Part Number MS27216-4
2HM19-1 HM Series Hermetically Sealed Basic Switch, Single Pole Double Throw Circuitry, 4 A at 28 Vdc, Integral Lever Actuator, Leadwire Termination, Military Part Number MS27216-2