The ET-30D is a mini power supply that operates with select Mountz electric screwdrivers. It is single tool controller that is designed to operate at either 110v and 230v. The unit is can connect with the Scout screw counting system. Note: Operates with Electric Screwdriver Models: EF030, EF040 & EF05.Model:ET-30DTool Weight:8.8 oz.Tool Length:5.125Tool Width:2.75Tool Height:1.5Maximum Output:1AOutput VDC:30VInput VAC:100-230V