The Cadweld Plus PLUSCU2 Impulse Electronic Igniter Control Unit brings you the highest level of flexibility providing you the safety you need, the power to get the job done, and the ease-of-use you've come to expect. With new common sense features to improve safety like an automatically closing trigger guard. A visual LED counter so you always know the timing. And a five-second delay so you can ensure the area is clear. Even the updated power features give you better situational awareness from an integrated battery life indicator. This unit can provide up to 600 connections on eight AA batteries or up to 1500 when using the battery adapter to connect a DeWalt or Milwaukee battery. Easy to use with the high-temperature lead that has an alligator clip design for simple use. There is also a window so you can verify the clip is in the right position.