INT (not INT2) unable to find or communicate with IQ2 devices.

Older INT Interface devices needed to be upgraded with a retro kit to be able to communicate with IQ2 devices (USP-2, USM-810 etc). Retro Kit Part number: 101888-1


Note: Even though the Retro Kit is an option we recommend upgrading to an INT-II (INT2) or an INT3 for the full benefit of an Interface that was designed for IQ2 protocol.