Profile: ACO Pacific, Inc. specializes in providing measurement microphones & mic systems, industrial & community sound (noise) level alarm & monitoring systems, calibrators, sound intensity probes, acoustical/emi isolators, and noise generators. The brands we offer include ACOtron«™, Simple Intensity«™, Extremely Random«™, ACOustiCap«™, SLARM«™, SLARMNet«™, ACOustAlarm«™, ACOustAlert«™, ACOustical Interface«™. The ACOtron™ 4212 is designed to work with both prepolarized (electret) measurement microphones, accelerometers and other charge devices. The 4212 may be powered from industry standard IEPE/ICP or CCLD (Constant Current Line Drive) sources like the IEPE/ICP® or bruel and kjaer Deltatron® equivalents found in many measurement instruments. The 4212 permits maximum utilization of available current and supply voltage.