The Makita 620225-6 Controller HM1214C helps manage electrical functions within compatible HM1214C demolition hammer equipment for consistent operation. This replacement controller works with the tool's electrical system to regulate and coordinate power between internal components during use. A properly functioning controller supports stable electrical operation, responsive tool perfo... https://www.wholetoolbox.com/makita-620225-6-controller-hm1214c/620225-6.html