The 16-way relay board allows expansion of the universal relays on the CSEVO2/4 controller in groups of 16. Up to 16, 16-way Relay expansion boards can be connected via ribbon cable to expand the controllers relay capacity up to a maximum of 250 relays per controller.

Typically they are used to control low-level lifts, lighting, fire door and locker control.

Note: 16-Way expansion boards cannot be mixed with CS4270 12 x 4 Expansion board on a single EVO controller.