SENSORMATIC ELECTRONICS CORP <SNSR> 3RD QTR NET Feb 28 end Shr profit 11 cts vs loss 37 cts Net profit 3,027,000 vs loss 10.4 mln Revs 22.3 mln vs 19.9 mln Avg shrs 28.6 mln vs 29.0 mln Nine mths Shr profit 34 cts vs loss 22 cts Net profit 9,560,000 vs loss 6,072,000 Revs 71.9 mln vs 64.7 mln Avg shrs 28.5 mln vs 27.9 mln NOTE: Prior year net both periods after 15.2 mln dlr writeoff.