The 322 Series Radio Control is optimal for the harshest of industrial conditions. With eight 2-step pushbuttons, the 322 is one of our most versatile systems. Weighing in at less than one pound, the 322 Series Radio Control will get the job done without fatiguing the user. Other advantages of the 322 include transmitter self diagnostics which detect and report any system failure; three-user selectable frequencies; 4.3 billion individual ID codes; and an anti-power interruption circuit.