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et IN LOCAL. Use with a local IR receiver when the AVR350 front panel IR receiver is obstructed. fk IN ZONE 2. This allows the AVR350 to be controlled remotely from Zone 2 via infrared remote control (see section ‘Zone 2 connections’ above for further details). fn RS232 CONTROL Use with control devices having an RS232 serial port (for example, Crestron and AMX touch screen controllers). This connection is also used for upgrading control software. See the sections at the end of this manual for co