SHV High Voltage Reed Relays Standex-Meder SHV High Voltage Reed Relays feature switching up to 1kVDC, a 4kVDC breakdown voltage, and an internal magnetic shield. The SHV Reed Relays are 50% smaller than Standex-Meder DIP and DIL reed relays. These SHV High Voltage Reed Relays are designed for use in automated test equipment, battery-powered devices, medical equipment, portable defibrillators, and more.