Features and Benefits:�Ammeter and power switch are located on front for easy operator access�Included with Vac-U-Rig® 4136�30 amp, 120 volt�Second outlet located on the backside of the unitSwitch box, 30 amp, 120 Volt. Ammeter and power switch are located on the front of the receptacle for easy operator access. A second outlet is located on the backside of the unit. Supplied as standard equipment with Vac-u-rig model 4136.