Connect two, three, four, or more DUALPRO together! (Or Connect a single DUAL to a DUALPRO)
Using the Link Cable - simply connect the Intercom Link IN on the first DUAL PRO, with the Intercom Link OUT on the second DUALPRO (Or DUAL).
One Link Cable is required to connect two DUALPROs TwoLink Cables are required to connect threeDUALPROs Three Link Cables are required to connect four DUALPROs etc.
Use the Link cable to also connect the DUALPRO to a Device (eg: Smart phone)
Black 2m audio cable.
A great accessory for DUAL / DUAL PRO owners wanting to expand their intercom system