2 DPDT signal relay module. TAKAMISAWA RY5W-K high quality relays, switch contact material - gold overlay silver-palladium. Darlington transistor circuits drive relay coil, LED indicator for each relay channel. High quality screw terminal block. FR-4 fiber glass PCB, dual copper layers. Taiwan DINKLE fireproof nylon material DIN rail mount carrier (not China low quality carrier), can support width 35mm / 32mm / 15mm rail, and the carrier can be taken apart for panel mount use. https://elecena.pl/product/25000633/electronics-salon-din-rail-mount-2-dpdt-signal-relay-interface-module-dc-5v-version 2024-01-24 https://elecena.pl/product/25000633/electronics-salon-din-rail-mount-2-dpdt-signal-relay-interface-module-dc-5v-version 2025-05-26