256-503,PCB TERMINAL BLOCK; PUSH-BUTTON;
256-503/000-009/999-950,PCB TERMINAL BLOCK; PUSH-BUTTON;
256-503/332-009/999-950,PCB TERMINAL BLOCK, PUSH-BUTTON
256-503/334-000,PCB TERMINAL BLOCK; PUSH-BUTTON;
256-504,PCB TERMINAL BLOCK; PUSH-BUTTON;
256-504/332-009/999-950,PCB TERMINAL BLOCK, PUSH-BUTTON
256-504/333-000,PCB TERMINAL BLOCK; FINGER-OPERA
256-505,PCB TERMINAL BLOCK; PUSH-BUTTON;