??Compatible Models?For use on indoor QO Homeline 150A - 225A Main Breaker Load Centers. Quickly convert existing QO HomeLine Load Centers into back-up power solutions. No need for a separate generator panel or special cover. ??Safety Stability?This kit interlocks the QOM1 or QOM2 main breaker with a 2-pole breaker back-fed from a generator. Avoid the inconveniences that an unexpected power outage can cause with Indoor Generator Interlock Kit. It is used to direct generator power to any circuit within your home. ??Easy to Install?Sintron provides two retaining brackets, one for QO another one for Homeline branch breaker. no more hard decision! It is very easy to install or remove. Allow you to install this Interlock Kits more convenient and easier. Ideal for domestic and professional use with high quality. ??Durable Material?Sintron's generator interlock kit is engineered from impact and chemical resistant stainless steel, which has good performance in heat and acid resistant. It is very durable and reusable. ??Package Contents?1x interlock bracket, 2x retaining bracket, 1x hole drilling template, 3x hex nuts, 3x 10-32 shoulder screws, 1x interior mounting screw, 1x wiring diagram, 2x interlock translation labels, 1x kit instruction.