HFW1101K13 is an electromagnetic relay designed for low-level switching and communications applications. The relay features a coil resistance of 700 O ± 10% at +25°C with a nominal voltage of 13.5 VDC, and operates reliably between 1.5 VDC minimum and 8.0 VDC maximum. It is rated for 28 VDC resistive contact applications with 100,000 operations and exhibits fast switching characteristics with a maximum operate and release time of 4 ms and contact bounce of 2 ms maximum. The relay is designed to withstand harsh environmental conditions including vibration from 10 CPS to 2000 CPS at 20 g's, shock of 100 g's for 11 ms duration, and operates across a wide temperature range of -65°C to +125°C. This makes it suitable for telecommunications equipment, instrumentation, and industrial control systems requiring reliable low-level switching performance.