2 DPDT signal relay module. TAKAMISAWA RY24W-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. Dimensions: L72.5mm x W47.35mm x H14.1mm https://elecena.pl/product/25000630/electronics-salon-2-dpdt-signal-relay-module-board-dc-24v-version-for-arduino-raspberry-pi-8051-pic 2024-01-24 https://elecena.pl/product/25000630/electronics-salon-2-dpdt-signal-relay-module-board-dc-24v-version-for-arduino-raspberry-pi-8051-pic 2025-05-26