DwyerDwyer Instruments Inc.’s Series 861H Hermetic Solid-State Relay features an internal heat sink, an internal snubber, finger-safe terminals, DIN or panel mounting, and LED indicator light. It is a complete solid-state relay in a modular package with no moving parts. The intrinsically safe, patent-pending 861H incorporates the integrated heat sink and sealing technology to achieve the Class 1, Division 2 rating from Underwriters Laboratories for approved use in Groups A, B, C and D hazardous locations. The device provides reliable switching and long life operation in demanding applications, such as medical equipment, mining, oil & gas, and more. – www.dwyer-inst.com