Powered and Controlled from the USB bus.

Relays - 4 with integrated snubbing of the normally open terminals
Power - Powered from standard USB bus 
Control interface - USB with a mini B connector
Relay current - Up to 16Amp @24vdc or 250vac 
Connections - Screw Terminals for N/O N/C and Common contacts.

Devantech dS3484 case. Includes mounting holes for fixing to a wall or back panel. This precision snap together case includes screws for mounting the dS3484 module.

Supplied as a case only, the dS3484 module should be ordered separately.