DinaSys DR4 relay module DinaSys DR4 relay module with 4 double pole-to relay. Each relay has a diode suppression to prevent damage to the digital outputs by afschakelpuls and an LED indicates the relay is energized. The DR4 is intended for switching point pieces (polarization), the feeding of English Men, for the block-based systems, but is also universally applicable. Standard design with 12 volt DC relays, in order for other voltage (5 volts, 24 volts)
