Tender Specification: FR-21 Converter for enabling manufacturer-specific devices to be controlled by RS-232 commands. The converter translates RS-232 commands to the manufacturer-specific audio network system. It can store up to 32 macros on the device, and each can be used for commands such as presets, volume, routing or standby. The macros can be triggered with simple strings via RS-232. Technical data: connectors RJ-45 (galvanically isolated), RS-232 3-pin connector (9600 Baud, galvanically isolated) supply voltage 9 - 48 V power consumption 1 W dimensions (W × H × D) 105 × 45 × 50 mm Manufacturer: Fohhn Audio AG Model: FR-21