1C/O Relay Module with Looped Coils has screw type terminals suitable for 2.5mm sq wire. Shavison Electronics offers 1C/O Relay Module with Looped Coils. Shavison Electronics also manufactures various types of interface modules, switch mode power supply, signal converters/isolators, micro-controller based system etc. The 1C/O Relay Module with Looped Coils has LED and free-wheeling diode across coil. This Relay Interface Module has reverse polarity blocking diode. This Relay Interface Module has coil voltage of 12 V and 24 V.