5 PCS HK19F relays in SHG versions with coil voltages DC5V, DC12V, and DC24VDC. The specific models are HK19F DC5V SHG, HK19F DC12V SHG, and HK19F DC24V SHG. 8-pin DPDT mini relays for PCB mounting. Each unit has 2 normally open (NO) and 2 normally closed (NC) contacts, providing double-pole double-throw switching. Relay type: ZJGIDTEM. Size reference: HK19F DC12V SHG. Key benefits and features - Versatile voltage-specific switching: coil voltages available in 5V, 12V, and 24V to match your control logic and power needs. - Compact PCB design: 8-pin DPDT mini relays suitable for space-constrained circuits. - Flexible contact configuration: 2 NO and 2 NC contacts enable simple signal routing and isolation for multiple circuits. - Reliable, field-proven relay technology in the HK19F family protecting control logic from higher-power loads. Use scenarios - Microcontroller/MCU projects: switch DC loads such as small motors, solenoids, or indicators from a logic-level controller. - Automation and interfacing: connect sensors and actuators via isolated, clean switching in PLC or embedded control panels. - Interlock and safety circuits: implement interlocks or fail-safe control schemes that require separate NO/NC paths. This selection provides a compact, reliable solution for voltage-specific switching across a range of electronic circuits while maintaining PCB-friendly mounting and straightforward integration.