Relay Interfacing modules Relay interfacing modules having contact configuration from 1NO upto 4CO with 24 VDC coil voltage & amp; contact rating of 10 Amp at 30 VDC / 240 VAC. Relay Interfacing Modules with Fuse / Fuse blown indication having contact configuration from 1 NO upto 4 CO with 24 VDC coil voltage & amp; contact rating of 10Amp at 30 VDC / 240VAC. Relay Interfacing Modules having contact configuration from 1 NO upto 4 CO with 110 / 230 VAC coil voltage & amp; contact rating ranging between 3 Amp to 10 Amp at 24 VDC / 230 VAC. Relay Interfacing Modules with Fuse / Fuse blown having contact configuration from 1 NO upto 4 CO with 110 / 230 VAC coil voltage & amp; contact rating ranging between of 3 Amp to 10 Amp at 24 VDC / 230 VAC. Electrical Isolation between the controller and the load side. For Signal Multification For Signal amplification And to interface different potential 1, 2, 4, 6, 8, 12, 16, Channel Relay Modules. Screwable connection for conductor cross section 0.75 to 2.5 sq.mm. Inbuilt Fuse and LED indication facility Easy for maintenance and visual fault indication. Easy user friendly labeling. Higher operational reliability. Switching status "High Active" is indicated by Green LED. Freewheeling diode is provided to avoid generation of voltage surges. Designation Plate screwed to the PCB for Labeling purpose. Interchangeable looping is provided. Version with and without relay Socket