This multifaceted control box can be used to turn up to four electrical circuits on and off. Examples would be electrically separated track blocks or street lights. Each toggle switch is used to turn a current circuit on or off. Depending on your requirements, you can connect this control box by means of its side plugs to direct or alternating current. An LED indicates when the control box is being supplied with current. Color-coded connections on the rear of the control box facilitate connections. Adhesive labels are included to identify what is connected to a switch on the control box. 126 x 116 x 66 mm / 5 x 4-9/16 x 2-5/8.This control box replaces item number 51800.