Pilz 2A000002 (PNOZ yh1 2DI 24VDC) is a PNOZ modular safety relay module for e-stop, safety-gate and configurable machine-safety systems. Pilz's exact product page describes it as: Head module for the modular safety relay myPNOZ, communication with expansion modules, supply voltage for myPNOZ, 1 input function, 2 test pulse outputs for detection of shorts across contacts and short circuits, 1 signal output, rotary switches for selecting functions and start type, LED display. The exact product ID and GTIN are recorded to avoid substitutions between variants with different input wiring, output contacts, supply voltage and terminals. Use the linked official Pilz operating manual to verify the safety function, circuit design, application limits and installation requirements before selecting or ordering the relay. Price, availability and lead time are supplied by quotation.