TYCO/M&SD's Range of Hermetically sealed flange mounted relays are specifically designed for Rail Applications. They are ideal for use in Harsh environments such as Extreme Temperature, High Shock + Vibration and High + Low Altidudes from 'Sea Level' to 300,000 feet, and in environments where Dust, Dirt and Moisture are a problem to other relay types. Their smaller size also allows for more relays to be installed in less space than convential relays.