HFW1201S117 is a Type HFW relay designed for switching and control applications with a 12.0 VDC nominal coil voltage. The relay features a coil resistance of 160 ohms ± 10% at 0–25°C, with a must-operate voltage of 6.5 VDC and a must-release voltage of 0.75 VDC, providing reliable switching performance across a wide voltage range. The contact rating is 2 amps at 28 VDC resistive load with an endurance of 100,000 operations. The relay is designed to withstand harsh environmental conditions, including vibration from 10 CPS to 2000 CPS at 20 g's, shock loads of 100 g's with 6 ± 1 ms duration, and an operating temperature range of -65°C to +125°C. This makes it suitable for industrial control systems, telecommunications equipment, and automotive applications where durability and reliable switching are essential.