The dS2832 is an Ethernet connected relay module featuring 32 channels of 16Amp 250Vac relays. Each relay has both normally open (NO) and normally closed (NC) as well as the common available on three terminals. 8 flexible I/O channels with a choice of VFC, NPN, or 12-bit analog input. 

This Devantech USB relay board provides 6 voltage-free contact relay outputs with a current rating of up to 16A each. Powered and controlled from any standard USB bus.

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.