33920 is the Suzuki part number for an engine ECU, 80G is the code for an Ignis and the A0 refers to the particular ECU with the '0' being the revision.
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1984 Suzuki SJ413K pick up, 1.6 16V Baleno engine 2000 Suzuki Vitara 1.6 8V, many mods 2004 Suzuki Ignis 1.5VVT 4Grip 2006 Suzuki Jimny 1.3VVT JLX+ and many more.