Catalog > Consumer Electronics > Kits > Kits (By Function) > Computer / Interface / Programmers Catalog > Consumer Electronics > Kits > CEM / CEK Communica 4 channel Opto Isolated Relay PCB 4 channel Opto Isolated Relay PCB CEM 4CH OPTO ISOLATED RELAY 4CH OPTO ISOLATED RELAY PCB Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE Additional Information nGroup Module nDevice Interface | Relay | Isolator Group Computer / Interface / Programmers