The 10-310/315 Range of High Voltage Switching Modules will Switch up to 1000V with Isolation to 1500V.Two module types are available:8 x Normally Open Relays and an 8 Channel Multiplexer, available with either Dry or Mercury Wetted Reed Switches. 10-310/315 high voltage switching modules are available in both SPST Relay or Multiplexer versions with a choice of reed switch types. These units are designed for both hot switching (close switch after load applied) and cold switching (close switch before EHT load applied) high voltage applications, giving reliable switching with no disruption to internal logic. Two switch types are available: Dry reed switches are the most popular and economical type. Mercury wetted switches exhibit even more extended life with lower contact resistance and excellent contact resistance stability.