David Clark 9100 Series Digital Intercom System Ntuziaka
Chọpụta ntuziaka mmezi zuru oke maka 9100 Series Digital Intercom System, ụdị 19602P-99 (08-24), nke David Clark dere. Mụta maka ojiji kwesịrị ekwesị, nlebanya nchekwa, na njikwa ịdọ aka ná ntị iji hụ na arụmọrụ kacha mma na gburugburu ebe ọjọọ.