The Crouzet Control 831C3 series relays are dry reed relays designed for a wide range of applications requiring reliable switching. These relays are available in both thru-hole and surface mount configurations, offering flexibility in design. Key features include compatibility with reflow systems, logic-compatible operation with 5, 12, or 24 VDC, and the option for automatic insertion. The semiconductor grade molding compounds and temperature ranges (-20°C to 85°C operating, -20°C to 100°C storage) ensure robust performance in various environments. They are commonly used in industrial control systems, instrumentation, and other applications where reliable, low-power switching is required.