Reed relays serve in many different applications requiring low and stable contact resistance, low capacitance, high insulation resistance, long life and small size. These include automatic test equipment and instrumentation. Reed relays can be fitted with coaxial shielding for high frequency applications. They also are available with very low thermal voltage for use in data acquisition equipment and process control. They are available with very high isolation voltages typically required for medical applications. Also, their low cost and versatility makes them suitable for many security and general purpose applications.