Relay Expansion Module
Relay expansion module allows 5 dry form C (SPDT) relay outputs to be added to the XL-4/5, and OMNI-624/848
Up to eight of these modules can be used with the XL-4/5 providing up to 40 relays
Up to four of these modules can be used with the OMNI-848, providing up to 20 relays.
Two modules on the OMNI-400/600/624 can be used providing up to 10 relays